IBM System Storage DS3300 Installation, User's, And Maintenance Manual

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System Storage DS3300 Storage Subsystem

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Installation, User’s, and Maintenance Guide

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System Storage DS3300 Storage Subsystem

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Installation, User’s, and Maintenance Guide

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Note: Before using this information and the product it supports, read the general information in Appendix C, “Notices,” on page 111 and see the Warranty Information document that comes with the storage subsystem.

Fourth Edition (October 2009)

US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.

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Contents

Figures ...........................vii

Tables ............................ix

Safety ............................xi

Chapter 1. Introduction ......................1

Overview ...........................1

Notices and statements in this document ................3

Features and operating specifications .................4

Models and optional devices ....................5

Operating-system support .....................5

Product updates .........................5

Best practices guidelines......................6

Storage subsystem components ...................7

Disk drives and bezels .....................7

Controllers ..........................9

Power supply and fans .....................10

Battery units .........................11

Software and hardware compatibility and upgrades ...........11

Software and firmware support code upgrades ............12

Determining firmware levels ...................12

Specifications .........................13

Area requirements ......................13

Dimensions ........................13

Weight ..........................13

Temperature and humidity ....................14

Electrical requirements .....................14

Site wiring and power ....................14

AC power recovery .....................15

Power cords and receptacles..................15

Heat output, airflow, and cooling .................15

Chapter 2. Installing the storage subsystem .............17

Inventory checklist .......................17

Installation overview .......................18

Handling static-sensitive devices ..................19

Preparing for installation .....................20

Required tools and hardware...................20

Preparing the site .......................21

Installing the DS3300 in a rack cabinet ................21

Chapter 3. Cabling the storage subsystem..............23

iSCSI controller connectors ....................23

Enclosure ID settings ......................23

Ethernet cables.........................24

Working with SAS cables .....................24

Connecting storage expansion enclosures to the DS3300 .........25

Redundant drive channel pair ..................26

Overview of steps to connect storage expansion enclosures to a storage

subsystem.........................27

DS3300 storage subsystem drive cabling topologies ..........27

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One single-controller DS3300 and one or more storage expansion

enclosures........................28

One dual-controller DS3300 and one storage expansion enclosure ....29

One dual-controller DS3300 and two storage expansion enclosures . . . 29 One dual-controller DS3300 and three storage expansion enclosures . . . 30

Adding a storage expansion enclosure to a dual-controller configuration that

is running .........................30

Upgrading a single-controller to a dual-controller when there is no attached

EXP3000 enclosure ......................32

Upgrading a single-controller to a dual-controller when there is one or more

EXP3000 enclosures attached to the storage subsystem.........32

Connecting secondary interface cables ................32

Configuring the storage subsystem .................34

Storage subsystem management methods ..............34

Host-agent (in-band) management method.............35

Direct (out-of-band) management method .............35

Installing the storage subsystem configuration ............36

Connecting hosts to the DS3300 .................36

DS3300 single-controller connections ..............37

DS3300 dual-controller configurations ..............40

Cabling the DS3300 power supplies .................41

Chapter 4. Operating the storage subsystem .............43

Performing the DS3000 Health Check process .............43

Hardware inspection .......................44

Turning on the storage subsystem ..................44

Installing the DS3000 Storage Manager Client .............46

Monitoring status through software .................47

Firmware updates .......................48

Troubleshooting the storage subsystem ...............48

Checking the LEDs .......................49

Power-supply LEDs ......................50

Front LEDs .........................51

Controller LEDs .......................52

Turning off the storage subsystem ..................54

Performing an emergency shutdown ................56

Restoring power after an unexpected shutdown ............56

Recovering from an overheated power supply .............57

Cache memory and cache battery ..................59

Cache memory ........................59

Controller cache battery ....................60

Controller battery age timer ...................61

Chapter 5. Replacing components .................63

Service action allowed LED ....................63

Removing a controller ......................63

Installing a controller .......................64

Replacing a controller ......................66

Working with hot-swap hard disk drives ................69

Removing a hard disk drive ...................70

Installing a hard disk drive....................71

Replacing a hot-swap hard disk drive ...............72

Replacing multiple drives ....................74

Replacing all drives at the same time ..............75

Replacing the drives one at a time................77

Replacing a power supply .....................79

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Replacing a battery .......................84

Replacing the memory cache DIMM .................86

Removing the DIMM ......................86

Installing the DIMM ......................88

Replacing the bezels.......................90

Removing the bezels......................90

Installing the bezels ......................90

Replacing the release tab on a controller or power supply .........91

Replacing a drive compatibility key .................92

Chapter 6. Solving problems ...................95

Chapter 7. Parts listing, DS3300 storage subsystem .........101

Replaceable components ....................101

Power cords .........................102

Appendix A. Records .....................105

Identification numbers ......................105

Hard disk drive locations .....................106

Storage subsystem and controller information record ..........107

Appendix B. Getting help and technical assistance ..........109

Before you call ........................109

Using the documentation .....................109

Getting help and information from the World Wide Web .........109

Software service and support ...................110

Hardware service and support ...................110

IBM Taiwan product service ....................110

Appendix C. Notices ......................111

Trademarks..........................111

Important notes ........................112

Particulate contamination .....................113

Documentation format ......................113

Electronic emission notices ....................114

Federal Communications Commission (FCC) statement ........114

Industry Canada Class A emission compliance statement ........114

Avis de conformité à la réglementation d’Industrie Canada .......114

Australia and New Zealand Class A statement ............114

United Kingdom telecommunications safety requirement ........114

European Union EMC Directive conformance statement ........115

Taiwanese Class A warning statement ...............115

Germany Electromagnetic Compatibility Directive ...........115

Deutschland: Einhaltung des Gesetzes über die elektromagnetische

Verträglichkeit von Geräten .................116

Zulassungsbescheinigung laut dem Deutschen Gesetz über die

elektromagnetische Verträglichkeit von Geräten (EMVG) (bzw. der EMC

EG Richtlinie 2004/108/EG) für Geräte der Klasse A ........116

People's Republic of China Class A warning statement .........116

Japanese Voluntary Control Council for Interference (VCCI) statement 116

Korean Class A warning statement ................116

Index ............................117

Contents v

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Figures

1. Example of DS3300 serial number label, product name, and machine type and model number

locations ..................................2

2. DS3300 hot-swap drive bays and bezels ......................7

3. Bezel (left side) ................................8

4. Bezel (right side) ...............................8

5. Rear view, single-controller model .........................9

6. Rear view, dual-controller model .........................10

7. Power-supply unit components for DS3300 .....................10

8. Airflow through the storage subsystem .......................11

9. Battery unit .................................11

10. DS3300 dimensions..............................13

11. DS3300 airflow ...............................15

12. Example of cold aisle/hot aisle rack configuration ...................16

13. DS3300 storage subsystem ports and controllers ...................23

14. Mini-SAS cable ...............................24

15. Example of a redundant drive path ........................26

16. One single-controller DS3300 and multiple single-ESM storage expansion enclosures .....28

17. One dual-controller DS3300 and one storage expansion enclosure ............29

18. One dual-controller DS3300 and two storage expansion enclosure ............29

19. One dual-controller DS3300 and three storage expansion enclosure ............30

20. Ethernet port locations on a dual-controller DS3300 ..................34

21. Host-agent (in-band) managed storage subsystems ..................35

22. Direct (out-of-band) managed storage subsystems ..................36

23. Single-host, single-controller configuration .....................37

24. Multiple-port, single-controller configuration .....................38

25. Multiple single-port hosts, single-controller configuration ................38

26. Multiple-host, multiple-port, single-controller, and redundant-path configuration ........39

27. Multiple-host, multiple-port, multiple-storage-subsystem configuration ...........39

28. Single-host, multiple-port, dual-controller configuration .................40

29. Multiple-host, multiple-port, dual-controller configuration ................40

30. Power-supply switches and connectors for the DS3300.................45

31. Power-supply LEDs ..............................50

32. Front LEDs and controls ............................51

33. Controller LEDs ...............................52

34. iSCSI LEDs .................................53

35. Removing a controller .............................64

36. Installing a controller .............................65

37. Removing and replacing a controller........................67

38. Removing the battery unit from the controller ....................68

39. Hard disk drive LEDs .............................70

40. Removing a drive ..............................71

41. Installing and removing a hard disk drive ......................72

42. Replacing a power-supply unit ..........................83

43. Removing and replacing a controller........................85

44. Removing a battery unit from the controller .....................85

45. Battery unit .................................86

46. Removing a controller .............................87

47. Removing the battery from the controller ......................87

48. Removing the DIMM from the controller ......................88

49. Installing the DIMM in the controller ........................88

50. Reinstalling the controller ............................89

51. Removing the bezels .............................90

52. Controller and power supply release tabs ......................91

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53. Removing the release tab on a power supply ....................92

54. Drive compatibility key .............................93

55. Installing a drive compatibility key.........................93

56. DS3300 storage subsystem parts ........................101

57. Serial number location on DS3300 ........................105

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Tables

1. Features and operating specifications........................4

2. Software and firmware levels for the DS3300 storage subsystem .............12

3. DS3300 weights ...............................13

4. DS3300 component weights...........................14

5. Troubleshooting ...............................96

6. Parts listing for DS3300 ............................102

7. IBM power cords ..............................103

8. Product identification record ..........................105

9. Drive location information record ........................106

10. Storage subsystem and controller information record .................107

11. Sample information record ...........................108

12. Limits for particulates and gases.........................113

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Safety

Before installing this product, read the Safety Information.

Antes de instalar este produto, leia as Informações de Segurança.

Pred instalací tohoto produktu si prectete prírucku bezpecnostních instrukcí.

Læs sikkerhedsforskrifterne, før du installerer dette produkt.

Lees voordat u dit product installeert eerst de veiligheidsvoorschriften.

Ennen kuin asennat tämän tuotteen, lue turvaohjeet kohdasta Safety Information.

Avant d’installer ce produit, lisez les consignes de sécurité.

Vor der Installation dieses Produkts die Sicherheitshinweise lesen.

Prima di installare questo prodotto, leggere le Informazioni sulla Sicurezza.

Les sikkerhetsinformasjonen (Safety Information) før du installerer dette produktet.

Antes de instalar este produto, leia as Informações sobre Segurança.

Antes de instalar este producto, lea la información de seguridad.

Läs säkerhetsinformationen innan du installerar den här produkten.

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Important:

Each caution and danger statement in this document is labeled with a number. This number is used to cross reference the English-language caution or danger statement with translated versions of the caution or danger statement in the IBM Systems Safety Notices document.

For example, if a caution statement is labeled “D005a,” translations for that caution statement are in the IBM Systems Safety Notices document under “D005a.”

Be sure to read all caution and danger statements in this document before you perform the procedures. Read any additional safety information that comes with the server or optional device before you install the device.

DANGER

Hazardous voltage, current, or energy levels are present inside any component that has this label attached. Do not open any cover or barrier that contains this label.

(L001)

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DANGER

Rack-mounted devices are not to be used as shelves or work spaces.

(L002)

Safety xiii

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DANGER

Multiple power cords. The product might be equipped with multiple power cords. To remove all hazardous voltages, disconnect all power cords.

(L003)

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DANGER

When working on or around the system, observe the following precautions:

Electrical voltage and current from power, telephone, and communication cables are hazardous. To avoid a shock hazard:

v Connect power to this unit only with the provided power cord. Do not

use the provided power cord for any other product.

v Do not open or service any power supply assembly. v Do not connect or disconnect any cables or perform installation,

maintenance, or reconfiguration of this product during an electrical storm.

v The product might be equipped with multiple power cords. To remove all

hazardous voltages, disconnect all power cords.

v Connect all power cords to a properly wired and grounded electrical

outlet. Ensure that the outlet supplies proper voltage and phase rotation according to the system rating plate.

v Connect any equipment that will be attached to this product to properly

wired outlets.

v When possible, use one hand only to connect or disconnect signal

cables.

v Never turn on any equipment when there is evidence of fire, water, or

structural damage.

v Disconnect the attached power cords, telecommunications systems,

networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures.

v Connect and disconnect cables as described in the following procedures

when installing, moving, or opening covers on this product or attached devices.

To disconnect:

1. Turn off everything (unless instructed otherwise).

2. Remove the power cords from the outlets.

3. Remove the signal cables from the connectors.

4. Remove all cables from the devices. To connect:

1. Turn off everything (unless instructed otherwise).

2. Attach all cables to the devices.

3. Attach the signal cables to the connectors.

4. Attach the power cords to the outlets.

5. Turn on the devices. (D005a)

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CAUTION:

>18 kg (39.7 lb)

18-32 kg (39.7-70.5 lb)

The weight of this part or unit is between 18 and 32 kg (39.7 and 70.5 lb). It takes two persons to safely lift this part or unit. (C009)

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Chapter 1. Introduction

Overview

This chapter describes the operating specifications, features, and components of the IBM

System Storage™DS3300 storage subsystem (hereafter referred to as

DS3300 or storage subsystem).

This chapter also includes an inventory checklist and important information about best practices guidelines and product updates for your DS3300.

The IBM System Storage DS3300 storage subsystem is designed to provide solutions to meet the needs of departmental and midrange storage requirements, delivering high performance and availability, advanced functionality, along with a modular and scalable storage capacity design. With iSCSI host connectivity and support for RAID levels 0, 1, 3, 5, and 6, the DS3300 provides an internal physical storage capacity that is scalable up to 5.4 TB (terabytes) when using 450 GB Serial Attached SCSI (SAS) hard disk drives or up to 12.0 TB (terabytes) when using 1000 GB Serial Advanced Technology Attachment (SATA) hard disk drives.

Notes:

1. RAID 6 uses a P+Q design implementation.

2. When RAID level 1 is implemented and the number of hard disk drives increases to more than two, RAID level 10 is automatically implemented.

A 2U rack-mountable DS3300 enclosure houses one or two RAID controllers with up to two iSCSI data ports and one drive expansion port per controller, and up to twelve 3 Gbps SAS or SATA hard disk drives.

The DS3300 supports attachment of up to three storage expansion enclosures, resulting in the capability to connect to up to 48 hard disk drives and enabling storage configurations of over 21 TB using 450 GB SAS hard disk drives or 48 TB using 1000 GB SATA hard disk drives. The DS3300 supports configurations of SAS or SATA disks, or a combination of both types of disk drives in the same enclosure. Advanced DS3000 storage management and copy service options are available for the DS3300, including FlashCopy

and VolumeCopy.

The DS3000 Storage Manager version 10 software is also available for the DS3300. This storage-management software is designed to help centralize storage management, help simplify partitioning of the DS3000 series storage into as many as 32 virtual servers, and strategically allocate storage capacity to maximize storage space.

If firmware and documentation updates are available, you can download them from the IBM Web site. The DS3300 might have features that are not described in the documentation that comes with the unit, and the documentation might be updated occasionally to include information about those features, or technical updates might be available to provide additional information that is not included in the DS3300 documentation. To check for updates, complete the following steps:

1. Go to http://www.ibm.com/servers/storage/support/.

2. On the “Support for System Storage and TotalStorage products” page, under Select your product,intheProduct family field, select Disk systems.

3. In the Product field, select IBM System Storage DS3300.

4. Click Go.

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5. Make the following selections:

v For firmware updates, click the Download tab.

Note: Check the RAID controller management software for the firmware

version that is installed on the environmental services module (ESM).

v For documentation updates, click the Install and use tab.

Note: Changes are made periodically to the IBM Web site. Procedures for locating

firmware and documentation might vary slightly from what is described in this document.

The DS3300 comes with a limited warranty. For more information about the terms of your warranty, see the Warranty Information document that comes with the storage subsystem.

Record information about the DS3300 in Table 8 on page 105. You will need this information if you have to call for service.

The serial number is on the label in the vertical recess on the left bezel. The serial number is also on the left chassis flange and on the rear of the chassis. A label that includes the machine type, model, and serial number is on the top front right chassis corner. The following illustration shows the serial number label, product name (DS3300), and machine type, model, and serial number label on the front of the DS3300.

Note: The illustrations in this document might differ slightly from your hardware.

Serial number label

Product name

Figure 1. Example of DS3300 serial number label, product name, and machine type and model number locations

Machine type, model, and serial number label

Use Table 9 on page 106 to keep a record of the hard disk drives that are installed in or attached to the DS3300. This information can be helpful when you install additional hard disk drives or if you have to report a hardware problem. Make a copy of this table before you record information in it, in case you need extra space to write new values later, or when you update the DS3300 configuration.

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Notices and statements in this document

The caution and danger statements in this document are also in the multilingual IBM Systems Safety Notices document, which is in the Documentation folder on the IBM System Storage DS3000 Support CD. Each statement is followed by a reference number that you can use to locate the corresponding statement in your language in the IBM Systems Safety Notices document.

The following notices and statements are used in this document:

v Note: These notices provide important tips, guidance, or advice. v Important: These notices provide information or advice that might help you avoid

inconvenient or problem situations.

v Attention: These notices indicate potential damage to programs, devices, or

data. An attention notice is placed just before the instruction or situation in which damage might occur.

v Caution: These statements indicate situations that can be potentially hazardous

to you. A caution statement is placed just before the description of a potentially hazardous procedure step or situation.

v Danger: These statements indicate situations that can be potentially lethal or

extremely hazardous to you. A danger statement is placed just before the description of a potentially lethal or extremely hazardous procedure step or situation.

Chapter 1. Introduction 3

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Features and operating specifications

Table 1 contains a summary of the features and operating specifications of the DS3300. Depending on your DS3300 model, some features might not be available, or some specifications might not apply.

Table 1. Features and operating specifications

General:

v Modular components

– High-capacity disk drives – RAID controller modules – Power supplies with built-in fan

units

v Technology

– Supports disk array technology – iSCSI host interface, redundant

data storage, power and cooling system, and SAS disk controllers

– Hot-swap technology for hard

disk drives, power supplies, and controllers

v User interface

– Built-in power, activity, and fault

LEDs, identification labeling on components, rear LEDs, and connectors

– Easy-to-replace hard disk drives,

power supplies with built-in fan units, and controllers

Hard disk drive storage:

Maximum hard disk drives per DS3300: 12 Drive type: SAS and SATA

Controllers:

v Technology and interfaces:

– iSCSI interface: Two RJ-45

gigabit Ethernet connectors per controller

– SAS interface: One 26-pin,

mini-SAS connectors per controller

Acoustical noise emissions:

For maximum system configurations (12 hard disk drives installed)

v Sound power (idling): 6.2 bels v Sound power (operating): 6.2 bels v Sound pressure (idling): 48 dBA v Sound pressure (operating): 48

dBA

AC power supply with built-in fan:

v The DS3300 comes with two

hot-swap 530-watt (115 - 230 V ac) power supplies.

v The two power supplies provide

redundant power to the DS3300.

Size:

v Height: 8.7 cm (3.4 in.) v Depth: 52.1 cm (20.5 in.) v Width: 44.7 cm (17.6 in.) v Weight: approximately 17.2 kg

(38.0 lb) for a standard unit; when fully configured, 29.3 kg (64.6 lb)

Environment:

v Air temperature:

– DS3300 on: 10° to 35°C (50°

to 95°F); altitude: 30.5 (100 ft) below to 3000 m (9840 ft) above sea level; temperature change: 10°C (18°F) per hour

– DS3300 off: 10° to 50°C (14.0°

to 120.0°F); maximum altitude: 3000 m (9840 ft); temperature change: 15°C (27.0°F) per hour

v Humidity:

– DS3300 on: 20% to 80% – DS3300 off: 10% to 90% – Maximum dew point: 26°C

(79°F)

– Maximum humidity gradient:

10% per hour

Heat output

Approximate heat output in British thermal units (Btu) per hour: v Minimum configuration: 205 Btu

(60 watts)

v Maximum configuration 1235

Btu (361 watts)

Electrical input:

v Sine-wave input (50 - 60 Hz)

required

v Input voltage low range:

– Minimum: 90 V ac – Maximum: 136 V ac

v Input voltage high range:

– Minimum: 198 V ac – Maximum: 264 V ac

v Approximate input kilovolt-amperes

(kVA): – Minimum: 0.06 kVA – Maximum: 0.38 kVA

Notes:

1. Power consumption and heat output vary depending on the number and type of optional features that are installed and the power-management optional features that are in use.

2. These levels were measured in controlled acoustical environments according to the procedures specified by the American National Standards Institute (ANSI) S12.10 and ISO 7779 and are reported in accordance with ISO 9296. Actual sound-pressure levels in a given location might exceed the average stated values because of room reflections and other nearby noise sources. The declared sound-power levels indicate an upper limit, below which a large number of computers will operate.

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Models and optional devices

The DS3300 RAID controller cache size, partitions, and other features vary depending the DS3300 model and optional devices.

Contact your IBM marketing representative or authorized reseller for more information about the DS3300 models and options.

Operating-system support

The following operating systems are supported for host servers that have mapped LUNs that are created in the DS3300 with storage expansion enclosures:

v Microsoft v Red Hat

Windows®Server 2003

Enterprise Linux

v SuSE Linux Enterprise Server

For additional host operating-system support, see the latest DS3000 Storage Manager Version 2 software readme file and the IBM DS3000 series products interoperability matrix at http://www.ibm.com/systems/storage/disk/ds3000/ds3300/.

Product updates

Important: To keep your storage subsystem up-to-date with the latest firmware and

other product updates, register the storage subsystem. Go to http://www.ibm.com/ servers/storage/support/disk/. From the menu at the top of the page, click My account. From the My IBM menu at the top, select My Support. On the next page, click register now.

Download the latest version of the DS3000 Storage Manager software, DS3300 storage subsystem controller firmware, DS3000 series storage expansion enclosure firmware, and drive firmware when you initially install the storage subsystem and when product updates become available.

To receive product updates, complete the following steps:

1. After you have registered, type your user ID and password to log in to the site. The “My support” page opens.

2. Click add products.

3. From the menu, select Storage.

4. In the next menu, and in subsequent menus, select the following topics:

v Computer Storage v Disk Storage Systems v System Storage DS3000

Note: During this process a check list is displayed. Do not select any of the

items in the check list until you have completed the selections in the menus.

5. When you have finished selecting the menu topics, select the machine type of your DS3000 series product and any other attached DS3000 series products for which you want to receive information; then, click Add products. The “My support” page reopens.

6. On the “My support” page, click the Edit profile tab; then, click Subscribe to email.

Chapter 1. Introduction 5

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7. In the menu, select Storage.

8. On the next page, select the check boxes for the following items:

v Please send these documents by weekly email v Downloads and drivers v Flashes v Any other topics that you are interested in

Then, click Update.

9. Click Sign out to log out of My Support.

Best practices guidelines

To ensure optimal operation of your system, always follow these best practices guidelines:

v Make sure that the storage subsystem is in an optimal state before you shut it

down. Never turn off the power if any amber LED is lit; be sure to resolve any error conditions before you shut down the storage subsystem.

v Back up the data on your storage drives periodically. v To maintain power redundancy, connect the DS3300 right and left power-supply

units to two independent external power circuits through ac power distribution units (PDUs) inside a rack cabinet or directly into external receptacles. Similarly, the right and left power supplies of the storage expansion enclosures (such as the EXP3000) that are attached to the DS3300 should be connected to the same two independent external power circuits as the DS3300. This ensures that the DS3300 and all its attached storage expansion enclosures will have power in the event that only one power circuit is available. In addition, having all the right or all the left power cables connected to the same power circuit enables the DS3000 devices in the configuration to power-on simultaneously during an unattended restoration of power.

Note: Do not overload the circuits that power your storage subsystem and

storage expansion enclosures. Use additional pairs of ac PDUs. See Table 1 on page 4 for information about storage subsystem power requirements. Contact your technical-support representative for additional information.

v Before any planned system shutdown or after any system additions, removals, or

modifications (including firmware updates, logical drive creations, storage partitioning definitions, hardware changes, and so on), save the storage subsystem profile as explained in the DS3000 Storage Manager Version 2 Installation and User's Guide for your operating system. Save the profile in a location other than in the logical drives that are created for the DS3300.

v During any maintenance or attended power-on procedure, carefully follow the

power-on sequence that is described in “Turning on the storage subsystem” on page 44. Make sure that each component of the storage subsystem is powered-on in the correct order during this entire power-on procedure to make sure that the controller will be able to optimally access all of the storage subsystems.

v The storage subsystem supports simultaneous power-on to the system

components; however, you should always follow the power-on sequence that is described in “Turning on the storage subsystem” on page 44 during any attended power-on procedure.

v A storage subsystem in an optimal state should recover automatically from an

unexpected shutdown and unattended simultaneous restoration of power to

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system components. After power is restored, call your IBM technical-support representative if any of the following conditions occur:

– The storage subsystem logical drives and subsystems are not displayed in the

DS3000 Storage Manager Version 2 graphical user interface. – The storage subsystem logical drives and subsystems do not come online. – The storage subsystem logical drives and subsystems seem to be degraded.

Storage subsystem components

The storage subsystem has the following removable components. These components, called customer replaceable units (CRUs), are accessible from the front or rear of the storage subsystem.

v Up to twelve 3 Gbps SAS or SATA hard disk drives v Up to two RAID controllers v Two power supplies

Disk drives and bezels

Figure 2 shows the locations of hot-swap disk drives and bezels. The hot-swap features enable you to remove and replace hard disk drives, power supplies, and controllers (in a dual-controller storage subsystem) without turning off the storage subsystem. You can maintain the availability of the storage subsystem while you remove, install, or replace a hot-swap device.

The hot-swap drive bays that are accessible from the front of the storage subsystem are shown in Figure 2.

Hot-swap hard disk drive

System Storage

Bezels

Figure 2. DS3300 hot-swap drive bays and bezels

Filler panel

Hot-swap hard disk drive

You can install up to 12 hot-swap SAS or SATA hard disk drives in the DS33000.

Filler panel

The DS3300 comes with filler panels in the drive bays. Before you install a hard disk drive, remove the filler panel and save it for future use. Each of the 12 drive bays must contain either a filler panel or a hard disk drive.

Chapter 1. Introduction 7

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Bezel (left side)

The left bezel contains the DS3300 LEDs, as shown in the following illustration. For a description of the LEDs, see “Front LEDs” on page 51.

Power-on LED System locator LED Overtemperature LED System error LED

Figure 3. Bezel (left side)

Bezel (right side)

The right bezel contains the hard disk drive identification information, as shown in the following illustration.

Drives 1 - 4

Drives 5 - 8

Drives 9 - 12

Figure 4. Bezel (right side)

The DS3300 supports up to twelve 3 Gbps SAS or SATA hard disk drives, which come preinstalled in drive trays. Install drives in the 12 drive bays on the front of the storage subsystem. When a drive is installed, the drive and tray bay designation is set automatically. The hardware addresses are based on the enclosure ID setting on the controller and on the physical locations of the drives in the storage subsystem.

There are no serviceable parts in a drive assembly. If it fails, it must be replaced in its entirety (drive, bezel, and tray). When you replace a drive, be sure to order and install the correct drive. Using a nonsupported drive causes the drive to be locked out by the DS3300 controller firmware.

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Controllers

Attention:

1. After you remove a drive from a bay, wait 70 seconds to allow the drive to spin down before you replace or reseat the drive. Failure to do so might cause unpredictable results.

2. Never hot-swap a drive when its associated green activity LED is flashing or its associated amber fault LED is flashing. Hot-swap a drive only when its associated amber fault LED is lit continuously or when the drive is inactive and its associated green activity LED is not flashing.

Note: If the hard disk drive that you want to remove is not in a failed or bypass

state, always use the Storage Manager software either to place the drive in a failed state or to place the array that is associated with the drive (or drives) in an offline state before you remove the drive from the enclosure.

The DS3300 has one or two hot-swappable and redundant RAID controllers. The controllers are at the rear of the storage subsystem. The left controller is controller A, and the right controller is controller B. When the DS3300 has two controllers, one controller will continue to operate if the other controller fails.

The controllers contain the storage subsystem control logic, interface ports, two gigabyte iSCSI data ports, and LEDs.

Each controller has one drive expansion port for connecting to the DS3000 storage expansion enclosures and one Ethernet port for DS3300 subsystem management purposes. See Figure 13 on page 23 and Figure 20 on page 34.

Attention: When a DS3300 has two controllers, the controllers must be identical to each other in hardware (part number, DIMM size) and firmware.

The storage management software automatically sets the enclosure ID number for the controllers. You can change the enclosure ID setting through the DS3000 storage management software only. There are no switches on the DS3300 chassis to manually set the enclosure ID. Both controller enclosure ID numbers are identical under normal operating conditions.

Figure 5 shows a single-controller DS3300.

Raid controller A

Hot-swap power supplies

Figure 5. Rear view, single-controller model

Filler panel

Chapter 1. Introduction 9

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Figure 6 shows a dual-controller DS3300.

Figure 6. Rear view, dual-controller model

Power supply and fans

The storage subsystem has two removable power-supply units. Each power-supply unit contains one power supply and two fans. The four fans pull air through the drives from front to back across the drives.

The fans provide redundant cooling, which means that if one of the fans in either fan housing fails, the remaining fans continue to provide sufficient cooling to operate the storage subsystem. The power supplies provide power to the internal components by converting incoming ac voltage to dc voltage. If one power supply is turned off or malfunctions, the other power supply maintains electrical power to the storage subsystem. To preserve the optimal airflow, do not remove a failed power-supply unit from the DS3300 chassis until you are ready to replace it with a new power-supply unit.

RAID controller BRAID controller A

Figure 7 shows the power-supply unit components for the DS3300.

Power switch

Figure 7. Power-supply unit components for DS3300

Power connector

Power switch

Power connector

10 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide

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Battery units

Figure 8 shows the airflow through the storage subsystem.

Airflow

Figure 8. Airflow through the storage subsystem

Each RAID controller contains 512 MB of cache memory (or more, if you have upgraded the memory). It also contains a sealed, rechargeable lithium ion battery that maintains data in the cache for up to 3 days in the event of a power failure.

Figure 9 shows the locations of the battery and memory cache DIMM in the controller.

Memory cache DIMM

Host adapter

Battery connector

Memory cache battery

Captive fastener

Figure 9. Battery unit

The battery chargers in the power supplies perform a battery test when the storage subsystem is started and on a regularly scheduled interval thereafter. Data caching starts after the battery tests are completed.

The condition of the battery is indicated by an LED on the rear of the controller (see “Controller LEDs” on page 52 for the location of the battery fault LED and conditions that the LED indicates).

Software and hardware compatibility and upgrades

The latest DS3300 controller firmware and NVSRAM, the storage expansion enclosure (drive enclosure) ESM firmware, and the hard disk drive firmware must be installed to ensure optimal functionality, manageability, and reliability.

Chapter 1. Introduction 11

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Software and firmware support code upgrades

To enable support for the DS3300, you must make sure that your system software and firmware are at the levels shown in Table 2, or later.

Note: SATA hard disk drive support requires that the DS3300 controller and any

storage expansion enclosures are at the firmware levels listed in the following table.

Table 2. Software and firmware levels for the DS3300 storage subsystem

Software/firmware Level

DS3000 Storage Manager software

DS3300 controller firmware 10.35.41.00 or later DS3300 controller NVSRAM Single controller: N1726D33LR335V02.dlp

ESM firmware for attached storage expansion enclosures

Drive firmware You can find the latest drive firmware at the IBM

You can also find the latest DS3000 Storage Manager software, DS3300 controller firmware, and NVSRAM firmware at http://www.ibm.com/servers/storage/support/ disk/.

10.35

Dual controller: N1726D330R335V05.dlp

1.96 or later

System Storage DS3000 Web site:

http://www.ibm.com/servers/storage/support/disk/

See the IBM System Storage DS3000 Storage Manager Version 2 Installation and Support Guide for your operating system for instructions for installing the DS3000 Storage Manager host software. The Installation and Support Guide is in the Documentation folder on the IBM System Storage DS3000 Support CD.

Determining firmware levels

To determine the firmware levels of the DS3300 storage subsystem, the connected storage expansion enclosures, and the installed hard disk drives, use the DS3000 Storage Manager software that is used to manage the DS3300 storage subsystem.

In the Subsystem Management window, click the Summary tab; then, click Storage Subsystem Profile in the Hardware Components section. When the Storage Subsystem Profile window opens, click the All tab and scroll through the Profile

For Storage Subsystem to locate the following information.

Note: The Profile For Storage Subsystem contains all the profile information for

the entire subsystem. Therefore, you might have to scroll through a large amount of information to locate the firmware version numbers.

DS3000 Storage Server

v NVSRAM version v Firmware version v Appware version v Bootware version

Hard Disk Drives

v Firmware version

12 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide

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Drive Enclosure

Specifications

The specifications of the DS3300 are listed in Table 1 on page 4. This section provides additional site specifications for the DS3300 storage subsystem. Before you install the storage subsystem, you must either make sure that your planned installation site meets these requirements or prepare the site so that it does meet these requirements. Preparations might involve meeting area requirements, environmental requirements, and electrical requirements for DS3300 storage subsystem installation, service, and operation.

Area requirements

The floor space at the installation site must provide enough strength to support the weight of the storage subsystem and associated equipment; sufficient space to install, operate, and service the storage subsystem; and sufficient ventilation to provide a free flow of air to the unit.

Dimensions

Figure 10 shows the dimensions of the DS3300, which conforms to the 19-inch rack standard.

v ESM firmware version

44.67 cm (17.59 in.)

8.72 cm (3.4 in.)

torage

S em t

52.1 cm (20.5 in.)

Sys

48.20 cm (18.98 in.)

Figure 10. DS3300 dimensions

Weight

The total weight of the storage subsystem depends on the number of installed components. Table 3 lists the maximum and empty weights for the storage subsystem in different configurations. Table 4 on page 14 lists the weight of each component.

Table 3. DS3300 weights

Weight

DS3300

Maximum

Single-controller unit 28.32 kg (62.44 lb) Dual-controller unit 29.27 kg (64.53 lb)

Empty

9.71 kg (21.41 lb)

Chapter 1. Introduction 13

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Table 3. DS3300 weights (continued)

DS3300

Chassis with all components and 12 hard disk drives.

Chassis without components and hard disk drives but with front cage frame, midplane, and

hard disk drive filler panels.

Table 4. DS3300 component weights

Unit Weight

Hard disk drive 0.95 kg (2.10 lb) Power supply with fan 2.52 kg (5.55 lb) Controller (including cache battery backup) 1.72 kg (3.8 lb) Battery 0.22 kg (0.49 lb)

Temperature and humidity

Table 1 on page 4 lists the acceptable temperature and humidity ranges in which the storage subsystem is designed to operate.

Notes:

1. The non-operating environment must not exceed the operating environment limits for longer than 60 days.

2. The storage environment must not exceed the operating environment limits for longer than 1 year.

3. Substantial deviations from the suggested operating range, in either direction, if sustained for extended periods of time, will expose the unit to greater risk of failure from external causes.

Weight

Maximum

Empty

Electrical requirements

Consider the following information when you prepare the installation site: v Protective ground: Site wiring must include a protective ground connection to

the ac power source.

Note: Protective ground is also known as safety ground or chassis ground.

v Circuit overloading: Power circuits and associated circuit breakers must provide

sufficient power and overload protection. To prevent possible damage to the unit, isolate its power source from large switching loads (such as air conditioning motors, elevator motors, and factory loads).

v Power failures: If a total power failure occurs, the unit automatically performs a

power-on recovery sequence without operator intervention after power is restored.

Site wiring and power

The storage subsystem uses wide-ranging redundant power supplies that automatically accommodate voltages to the ac power source. The power supplies operate within the range of 90 V ac to 264 V ac, at a minimum frequency of 50 Hz and a maximum frequency of 60 Hz. The power supplies meet standard voltage requirements for operation both inside the U.S.A. and outside the U.S.A. They use standard industrial wiring with line-to-neutral or line-to-line power connections.

14 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide

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The agency ratings for the DS3300 storage subsystem are 6 amps at 100 V ac and

2.5 amps at 240 V ac. These are the overall maximum operating currents for this system.

AC power recovery

After normal power is restored after a total ac power failure, the storage subsystem performs power-on recovery procedures automatically without operator intervention.

Power cords and receptacles

The storage subsystem comes with two jumper cords that are used to connect to the rack PDU. You must purchase the power cords that are applicable for use in a typical receptacle in your country. See “Power cords” on page 102 for more information.

Heat output, airflow, and cooling

Figure 11 shows the intended airflow for the DS3300. Allow at least 30 inches in front of the storage subsystem and at least 24 inches behind the storage subsystem for service clearance, proper ventilation, and heat dissipation.

Airflow

torage

S em t

Sys

Airflow

Figure 11. DS3300 airflow

When racks that contain many DS3300 storage subsystems are to be installed together, the following requirements must be met to ensure that the DS3300 storage subsystems are adequately cooled:

v Air enters at the front of the rack and leaves at the back. To prevent the air that

is leaving the rack from entering the intake of another piece of equipment, you must position the racks in alternate rows, back-to-back and front-to-front. This arrangement is known as “cold aisle/hot aisle” and is shown in Figure 12 on page

16.

v Where racks are in rows, each rack must touch the rack that is next to it to

reduce the amount of hot air that can flow around from the back of the rack into the intakes of the storage expansion enclosures that are in that rack. Use Suite Attach Kits to completely seal any gaps that remain between the racks. For details about Suite Attach Kits, contact your IBM marketing representative or authorized reseller.

v Where racks are in rows front-to-front or back-to-back, gaps of at least 122 cm

(48 in.) must separate the rows across the cold aisle (see Figure 12 on page 16).

Chapter 1. Introduction 15

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v To correct airflow in each rack, the rack filler plates must be installed in unused

positions. Also, all the gaps in the front of the racks must be sealed, including the gaps between the storage subsystems.

back

T42 racks

front

120 cm (48 in.)

cold aisle width

Air

Cold aisle

front

T42 racks

back

conditioner

Hot aisle

back

T42 racks

front

Airflow

Figure 12. Example of cold aisle/hot aisle rack configuration

Perforated tiles or gratings

244 cm (96 in.) between

center lines of hot

and cold aisle

16 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide

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Chapter 2. Installing the storage subsystem

This chapter provides the information about installing the storage subsystem into a rack cabinet.

Before you begin the installation, review the safety information in “Safety” on page xi and “Handling static-sensitive devices” on page 19.

“Installation overview” on page 18 provides an overview of the entire DS3300 installation process. Read this overview before you begin the installation.

Inventory checklist

After you unpack the DS3300, make sure that you have the following items. Depending on your DS3300 order, your shipping box might contain additional materials that are not in the following list.

v Hardware

– Hard disk drive filler panels (12) (Your storage subsystem might come with up

to 12 hard disk drives.) – RAID controllers (up to 2) – Power supplies (2) – Power cables (2 jumper line cords) – Rack-mounting hardware kit (1), including:

- Rails (2) (right and left assembly)

- Rail end plate covers (2) (right and left assembly)

- M5 black hex-head slotted screws (12)

- Washers (8)

Attention: The DS3300 does not come with region-specific power cords. You must obtain the IBM-approved power cords for your region. See “Power cords” on page 102 for the IBM-approved power cords for your region.

v Software and documentation

– IBM System Storage DS3000 Support CD

The support CD contains the IBM DS3000 Storage Manager Version 2 host

software. The CD also includes firmware, online help, and the following

documentation in Adobe Acrobat Portable Document Format (PDF):

- IBM System Storage DS3300 Storage Subsystem Installation, User’s, and Maintenance Guide (this document)

- IBM System Storage DS3000 Storage Manager Version 2 Installation and Support Guide for your operating system

- IBM Systems Safety Notices

– IBM System Storage DS3200, DS3300, and DS3400 Quick Installation Guide – Rack Installation Instructions

Instructions for installing the DS3300 in a rack cabinet are provided in the

Rack Installation Instructions. – Box of ID labels (used to label the enclosure IDs on the front of the DS3300) If you ordered additional premium features or entitlements, the premium features

activation or entitlement kits might also come inside the box.

Page 36

If an item is missing or damaged, contact your IBM marketing representative or authorized reseller.

Instructions for installing the DS3300 in a rack cabinet are provided in the Rack Installation Instructions .

Installation overview

CAUTION:

>18 kg (39.7 lb)

The weight of this part or unit is between 18 and 32 kg (39.7 and 70.5 lb). It takes two persons to safely lift this part or unit. (C009)

Attention: A fully configured DS3300 weighs up to 30 kg (66 lb). At least two

people should lift the DS3300 from the shipping box. You might want to open the sides of the shipping box and remove the components from the DS3300 before you lift it from the shipping box, to lighten the storage subsystem.

The following steps summarize the DS3300 installation process:

1. Review the preparation recommendations. See “Preparing for installation” on page 20.

2. Prepare the installation site. See “Preparing the site” on page 21.

3. Prepare the rack cabinet. See the Rack Installation Instructions.

4. Record the serial number, machine type and model number, and RAID controller MAC addresses for your DS3300 storage subsystem in Appendix A, “Records,” on page 105. See Figure 1 on page 2 for the location of the serial number.

The MAC addresses are labeled near the management port and the iSCSI data port Ethernet ports on each RAID controller.

5. Install and secure the DS3300 chassis and components in the rack cabinet. See the Rack Installation Instructions.

6. Install in the rack cabinet the storage expansion enclosure that you will cable to the DS3300. Follow the instructions in the Rack Installation Instructions for your storage expansion enclosure to set up and mount the storage expansion enclosures.

18-32 kg (39.7-70.5 lb)

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Attention

Before you power-on the storage subsystem, it must contain at least four drives. If at least four drives are not installed in each attached storage expansion enclosure and in the DS3300 storage subsystem, when you power-on the DS3300 and its attached storage expansion enclosures, your standard storage partition key might be lost and you must regenerate it, using instructions at http://www.ibm.com/storage/fasttkeys/.

In addition, the resulting insufficient load to the enclosure power supplies might cause them to intermittently appear to have failed, falsely indicating that the power supplies are bad. All drives in the DS3300 storage subsystem and the connected storage expansion enclosures must contain no prior configuration data.

7. Use SAS cables to cable the DS3300 to the storage expansion enclosures. See “Connecting storage expansion enclosures to the DS3300” on page 25.

8. Complete one of the following cabling tasks to enable management of the DS3300 configuration:

v If you are using out-of-band management, cable the DS3300 Ethernet ports

to either the management workstation or the host.

v If you are using in-band management, cable the DS3300 to the hosts. See

“Connecting hosts to the DS3300” on page 36.

9. Connect the power cables for the DS3300. See “Cabling the DS3300 power supplies” on page 41.

10. Power-on the attached storage expansion enclosure and the DS3300 storage subsystem, using the procedure in “Turning on the storage subsystem” on page 44.

11. Install the DS3000 Storage Manager Version 2 software on the management workstation (for out-of-band management) or on the host (for in-band management). See the IBM System Storage DS3000 Storage Manager 2 Installation and Support Guide for the management-workstation or host operating system for instructions for installing the DS3000 Storage Manager Version 2 software.

12. Use the DS3000 Storage Manager software to verify the configuration.

13. Review and perform the procedures in “Performing the DS3000 Health Check process” on page 43.

Handling static-sensitive devices

Attention: Static electricity can damage the storage subsystem and other

electronic devices. To avoid damage, keep static-sensitive devices in their static-protective packages until you are ready to install them.

To reduce the possibility of electrostatic discharge, observe the following precautions:

v Limit your movement. Movement can cause static electricity to build up around

you.

v Handle the device carefully, holding it by its edges or its frame. v Do not touch solder joints, pins, or exposed printed circuitry. v Do not leave the device where others can handle and damage it.

Chapter 2. Installing the storage subsystem 19

Page 38

v While the device is still in its static-protective package, touch it to an unpainted

metal part of the system unit for at least 2 seconds. This drains static electricity from the package and from your body.

v Remove the device from its package and install it directly into your system unit

without setting it down. If it is necessary to set down the device, put it back into its static-protective package. Do not place the device on your system unit cover or on a metal surface.

v Take additional care when you handle devices during cold weather. Heating

reduces indoor humidity and increases static electricity.

Preparing for installation

Before you install the DS3300 storage subsystem, create a detailed plan of how this unit will be used in your storage configuration. The plan should include determining RAID levels, failover requirements, operating systems that are to be used, and total storage capacity requirements.

To prepare the DS3300 storage subsystem for installation into a rack cabinet, complete the following steps:

1. Prepare the site to meet all area, environmental, power, and site requirements. For more information, see “Specifications” on page 13.

2. Move the shipping box that contains the DS3300 to the site.

CAUTION:

The weight of this part or unit is between 18 and 32 kg (39.7 and 70.5 lb). It takes two persons to safely lift this part or unit. (C009)

3. Make sure that you have the correct host software for your operating system. The support CD that comes with the DS3300 has the correct IBM DS3000

Storage Manager Version 2 host software. The CD also includes the DS3000 storage subsystem controller firmware. For

the latest controller firmware, see http://www.ibm.com/servers/storage/support/ disk/.

4. Read the applicable readme files that are included in the Storage Manager host software or DS3300 controller firmware packages for any updated information about hardware, software, or firmware products.

5. Continue with “Required tools and hardware.”

Required tools and hardware

Have the following tools and equipment available:

v Region-specific power cords that are required for the DS3300 v 5/16 (8 mm) hex nut driver v #0 and #1 Phillips screwdrivers v Electrostatic-discharge protection (such as a grounding wrist strap) v Ethernet interface cables and cable straps

>18 kg (39.7 lb)

18-32 kg (39.7-70.5 lb)

20 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide

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v Rack power jumper cords that come with the DS3300 v Rack-mounting hardware that comes with the DS3300 v SAS cables (1-meter or 3-meter)

Preparing the site

This section lists the floor space requirements and weight information for the DS3300. For information about interface cables and connections, see Chapter 3, “Cabling the storage subsystem,” on page 23.

The floor area at the installation site must provide the following conditions:

v Sufficient space to install the DS3300 v Enough stability to support the weight of the fully configured DS3300 and

Make sure that all requirements, such as floor space, air conditioning, and electrical service, have been met. Other site preparation activities include the following tasks:

v Make sure that there is enough room to move around the rack cabinet and install

v Install uninterruptible-power-supply devices. v If applicable, install host servers with host bus adapters (HBAs), switches, or

v Route cables from the hosts or switches to the installation area. v Route main power cords to the installation area.

associated systems (A fully configured DS3300 weighs 30 kg [66 lb].)

the modules.

other devices.

Continue with “Installing the DS3300 in a rack cabinet.”

Installing the DS3300 in a rack cabinet

To install the DS3300 in a rack cabinet, follow the instructions in the Rack Installation Instructions document that comes with the DS3300. Then, continue with

Chapter 3, “Cabling the storage subsystem,” on page 23.

Chapter 2. Installing the storage subsystem 21

Page 40

22 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide

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Chapter 3. Cabling the storage subsystem

After the storage subsystem is installed in its permanent location, you must cable it to hosts, drives, and other external devices, depending on your hardware configuration.

iSCSI controller connectors

Figure 13 shows controllers A and B, the host ports, and the drive expansion ports on the iSCSI controllers.

Host port 1

Controller A Controller B

Figure 13. DS3300 storage subsystem ports and controllers

Host port 1 and Host port 2

Drive expansion port

Enclosure ID settings

The controller automatically sets the enclosure ID number. You can change the setting through the storage management software, if necessary. Both controller enclosure ID numbers are identical under normal operating conditions.

Host port 2

Drive expansion

port

Host port 1

Drive expansion

port

Host port 2

The iSCSI host ports are auto-negotiated 100/1000 Mbps Ethernet ports that support iSCSI off load. The host ports also provide support for both Internet Protocol version 4 (IPv4) and IPv6, and have the advanced networking functions of jumbo frames, IEEE 802.1p, and virtual local area network (VLAN) support.

The drive expansion port is a x4 multilane SAS port. Connect a SAS cable to this port and to a drive expansion enclosure.

The allowable range of enclosure ID settings is 0 through 99. However, for best results, do not set the enclosure ID to 00 or any number less than 80. The DS3300 enclosure ID is normally set to a value of 85 at the factory.

Page 42

Ethernet cables

The DS3300 supports industry-standard Category 5e and Category 6 shielded and unshielded Ethernet cables for all iSCSI data ports and the management port.

To avoid damage or data transmission problems, consider the following precautions: v When you route the cable along a folding cable-management arm, leave enough

slack in the cable.

v Route the cable away from places where it can be damaged by other devices in

the rack cabinet.

v Do not put excess weight on the cable at the connection point. Make sure that

the cable is well supported.

v Do not route the cable parallel to power cables, unless you are using shielded

cables.

Working with SAS cables

Each DS3300 RAID controller has one x4 multilane SAS port for connecting to drive expansion enclosures.

Use a 1M or 3M (1-meter or 3-meter) SAS cable with a mini-SAS 4x multilane SAS connector on each end to connect a controller host port to a host HBA and to connect the drive expansion port to a storage expansion enclosure.

The following illustration shows the 1M and 3M mini-SAS cable.

Mini-SAS connectors

Blue plastic tab

Figure 14. Mini-SAS cable

The 1M and 3M SAS cables have a universal key connector that enables the cable to be used in all mini-SAS ports.

24 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide

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Attention: To avoid damage to the SAS cables, consider the following precautions:

v When you route the cable along a folding cable-management arm, leave enough

slack in the cable.

v Route the cable away from places where it can be damaged by other devices in

the rack cabinet.

v Do not put excess weight on the cable at the connection point. Make sure that

the cable is well supported.

To connect a mini-SAS cable, insert the mini-SAS connector into a mini-SAS port. Make sure that it locks into place.

To remove a mini-SAS cable, complete the following steps:

1. Put one finger into the hole on the blue plastic tab on the mini-SAS connector and gently pull on the tab to release the locking mechanism.

2. As you pull on the tab, pull out the connector to remove it from the port.

Connecting storage expansion enclosures to the DS3300

Attention

Before you power-on the storage subsystem, it must contain at least four drives. The storage subsystem must contain drives when it is powered-on; otherwise, your Software Feature Pack or Premium Feature key might be lost and you must regenerate it. If this happens, see the instructions at http://www.ibm.com/storage/fasttkeys/.

In addition, the resulting insufficient load to the enclosure power supplies might cause them to intermittently appear to have failed, falsely indicating that the power supplies are bad.

All drives in the DS3300 storage subsystem and the connected storage expansion enclosure or enclosures must contain no previously configured data.

In the initial installation of the DS3300, you can add only new storage expansion enclosures to the DS3300 storage subsystem. This means that there must be no existing configuration information about the storage expansion enclosures that you want to install.

Note: In this document, EXP3000 storage expansion enclosures are used as

examples in text and illustrations.

If the storage expansion enclosures that you want to install currently contain logical drives or configured hot spares and you want them to be part of the DS3300 storage subsystem configuration, see the IBM DS3000 Storage Manager Version 2

Installation and Support Guide, which is in the Documentation folder on the IBM System Storage DS3000 Support CD. Incorrect drive migration might cause loss of

configuration and other storage subsystem problems. Contact your IBM technical-support representative for additional information.

Chapter 3. Cabling the storage subsystem 25

Page 44

Redundant drive channel pair

Each RAID controller on the DS3300 has a drive expansion channel that contains an x4 SAS port. The storage expansion enclosures that are connected to this connector form a drive channel. The maximum number of hard disk drives that can be installed in one drive channel is 48. In a dual-controller DS3300, one drive channel from each controller combines to form a redundant drive-channel pair.

Figure 15 shows an example of a redundant drive-channel pair. If any component of the drive channel fails, the RAID controllers can still access the storage expansion enclosures in the redundant drive-channel pair.

Note: To support dual redundant drive paths, you must install the optional second

ESM in storage expansion enclosures that are connected to a dual-controller storage subsystem.

DS3300

EXP3000

SAS cable

RAID controller A RAID controller B

To DS3300 RAID controller A

SAS cable

Figure 15. Example of a redundant drive path

26 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide

SAS cable

To DS3300 RAID controller B

Page 45

Overview of steps to connect storage expansion enclosures to a storage subsystem

To connect storage expansion enclosures to the storage subsystem, complete the following steps:

1. Follow the instructions in the Installation, User's, and Maintenance Guide for your storage expansion enclosure and the Rack Installation Instructions to set up and mount the storage expansion enclosures.

2. Select a cabling topology applicable to the number of ESMs in the storage expansion enclosures that you will connect to the DS3300. If you are connecting external storage expansion enclosures to the DS3300, make sure that each storage expansion enclosure contains at least four drives before you power it on. In addition, make sure that the DS3300 storage subsystem contains at least four drives before you power it on.

“DS3300 storage subsystem drive cabling topologies” describes the recommended schemes for cabling storage expansion enclosures with one ESM or two ESMs to the DS3300 and to each other (if you are connecting more than one storage expansion enclosure).

3. Follow the cabling diagram for your chosen topology.

4. If required, set unique enclosure IDs for all storage expansion enclosures that are cabled to the DS3300. See the DS3000 Storage Manager Version 2 Installation and Support Guide for information about setting the enclosure ID.

The DS3300 storage subsystem locates the drives in the storage expansion enclosures after you power-on the configuration. Always turn on the storage expansion enclosures first and then turn on the DS3300. After you have powered-on the configuration, use the DS3000 Storage Manager software to check the status of the new drives, correct any errors, and configure the new drives.

DS3300 storage subsystem drive cabling topologies

This section describes the following preferred cabling topologies for cabling storage expansion enclosures to the DS3300 storage subsystem:

v “One single-controller DS3300 and one or more storage expansion enclosures”

on page 28

v “One dual-controller DS3300 and one storage expansion enclosure” on page 29 v “One dual-controller DS3300 and two storage expansion enclosures” on page 29 v “One dual-controller DS3300 and three storage expansion enclosures” on page

Each example provides redundant paths to the drives. If one of these examples is suitable for your hardware and application, complete the cabling connections as shown in the illustrations. If you have hardware other than what is shown in these examples to include in your topology, use these examples as a starting point for creating your specific topology.

Important:

1. The DS3300 supports the connection of a maximum of three storage expansion enclosures.

2. The DS3300 supports one redundant drive-channel pair.

3. In storage expansion enclosures that are connected to a dual-controller storage subsystem, you must install the optional second ESM to support dual redundant drive paths.

Chapter 3. Cabling the storage subsystem 27

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One single-controller DS3300 and one or more storage expansion enclosures

To cable one single-controller DS3300 to one or more single-ESM storage expansion enclosures, connect them as shown in Figure 16.

DS3300

EXP3000

SAS cable

RAID controller A

To DS3300 RAID controller A

Figure 16. One single-controller DS3300 and multiple single-ESM storage expansion enclosures

Note: To support dual redundant drive paths, you must install the optional second

ESM in storage expansion enclosures that are connected to a dual-controller storage subsystem. You must use one of the dual-controller topologies that are described in this section.

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One dual-controller DS3300 and one storage expansion enclosure

To cable one dual-controller DS3300 to one storage expansion enclosure, connect them as shown in Figure 17.

DS3300

SAS cable

EXP3000

RAID controller A RAID controller B

To DS3300 RAID controller A

SAS cable

To DS3300 RAID controller B

Figure 17. One dual-controller DS3300 and one storage expansion enclosure

One dual-controller DS3300 and two storage expansion enclosures

To cable one dual-controller DS3300 and two storage expansion enclosures, connect them as shown in Figure 18.

DS3300

RAID controller A RAID controller B

SAS cable

EXP3000

SAS cable

EXP3000

To DS3300 RAID controller A

SAS cable

To DS3300 RAID controller B

Figure 18. One dual-controller DS3300 and two storage expansion enclosure

Chapter 3. Cabling the storage subsystem 29

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One dual-controller DS3300 and three storage expansion enclosures

To cable one dual-controller DS3300 and three storage expansion enclosures, connect them as shown in Figure 19.

DS3300

EXP3000

SAS cable

RAID controller A RAID controller B

To DS3300 RAID controller A

SAS cable

Figure 19. One dual-controller DS3300 and three storage expansion enclosure

To DS3300 RAID controller B

Adding a storage expansion enclosure to a dual-controller configuration that is running

The following procedures provide instructions for adding storage expansion enclosures to a dual-controller DS3300 storage subsystem that is running.

Note: Make sure that each storage expansion enclosure has two ESMs before you

connect it to a dual-controller DS3300 storage subsystem. The second ESM must be purchased separately. Contact your IBM marketing representative or authorized reseller for more information about purchasing a second ESM. For more information about installing a second ESM, see the Installation Guide that comes with the storage expansion enclosure.

To add a storage expansion enclosure to a dual-controller DS3300 storage subsystem that is running, complete the following steps:

1. Make sure that the DS3300 storage subsystem status is Optimal in the Storage Manager software.

2. Use the storage expansion enclosure Rack Installation Instructions document to install the new storage expansion enclosure in the rack.

3. Connect the power cables to the new storage expansion enclosure.

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4. Power-on the storage expansion enclosure.

5. Connect one end of a Serial Attached SCSI (SAS) cable to the Drive expansion port on Controller A in the DS3300 storage subsystem.

6. Connect the other end of the SAS cable to the In port on the left ESM in the storage expansion enclosure.

7. Connect one end of a second SAS cable to the Drive expansion port on Controller B in the DS3300 storage subsystem.

8. Connect the other end of the second SAS cable to the In port on the right ESM in the storage expansion enclosure.

9. Wait until the DS3300 storage subsystem status is Optimal in the Storage Manager software before proceeding to step 10.

10. Add the hard disk drives to the storage expansion enclosure. Make sure that you wait at least 30 seconds for the Storage Manager software to recognize each newly added drive before you install another drive.

To add additional storage expansion enclosures after the first expansion unit is connected to a dual-controller DS3300 storage subsystem that is running, complete the following steps:

1. Make sure that the DS3300 storage subsystem status is Optimal in the Storage Manager software.

2. Use the storage expansion enclosure Rack Installation Instructions document to install the new storage expansion enclosure in the rack.

3. Connect the power cables to the new storage expansion enclosure.

4. Power on the storage expansion enclosure.

5. Connect one end of a Serial Attached SCSI (SAS) cable to the In port on the left ESM in the storage expansion enclosure that is being added to the configuration.

6. Connect the other end of the SAS cable to the Out port on the left ESM in the last storage expansion enclosure in the configuration (this storage expansion enclosure is directly connected to the Drive expansion port on controller A of the DS3300).

7. On the last storage expansion enclosure in the configuration, disconnect the SAS cable from the In port on the right ESM and connect it to the In port on the right ESM on the new storage expansion enclosure that is being added to the configuration.

Note: When the SAS cable is disconnected in step 7, a loss of path

8. Connect a SAS cable to the Out port on the right ESM of the new storage expansion enclosure and connect the other end to the In port on the right ESM in the storage expansion enclosure that was previously connected to controller B of the DS3300.

9. Wait until the DS3300 storage subsystem status is Optimal in the Storage Manager software before proceeding to step 10.

redundancy occurs and an error message is displayed in the Storage Manager Recovery GURU. Disregard the error message. The redundant path is restored in step 8 after the SAS cable is connected.

Chapter 3. Cabling the storage subsystem 31

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Upgrading a single-controller to a dual-controller when there is no attached EXP3000 enclosure

If you are upgrading a single-controller DS3300 storage subsystem to a dual-controller DS3300 storage subsystem and there are no EXP3000 storage expansion enclosures attached to the DS3300 storage subsystem, see “Installing a controller” on page 64.

Upgrading a single-controller to a dual-controller when there is one or more EXP3000 enclosures attached to the storage subsystem

Before you upgrade the DS3300 storage subsystem from a single-controller to a dual-controller, make sure that:

v You purchase a second environmental services module (ESM) for each EXP3000

storage expansion unit that is attached to the DS3300 storage subsystem. You install the second ESM during this procedure.

v You purchase the SAS cables that are required to create a redundant drive

enclosure path.

To upgrade a single-controller DS3300 storage subsystem to a dual-controller DS3300 storage subsystem when there are EXP3000 storage expansion enclosures attached to the DS3300, complete the following steps:

1. Turn off the DS3300 storage subsystem and all attached EXP3000 storage expansion enclosures.

2. Install a second RAID controller in the DS3300 storage subsystem by using the instructions in “Installing a controller” on page 64.

3. Install a second ESM in each EXP3000 that is connected to the DS3300 storage subsystem:

a. Read the safety information that begins on page xi and “Best practices

guidelines” on page 6.

b. Remove the ESM filler panel from the rightmost ESM bay of the EXP3000:

1) On the left side of the ESM filler panel, press the orange release tab to the right just enough to release the handle (no more than 6 mm [0.25 in.]) as you rotate the handle upward.

2) Using the handle, gently slide the ESM filler panel out of the EXP3000. Save the ESM filler panel for future use.

c. Hold the new ESM so that the handle is fully extended. d. Gently slide the ESM into the bay until it stops. Rotate the handle downward

into the closed position until it clicks.

4. Using the information provided in “DS3300 storage subsystem drive cabling topologies” on page 27, use SAS cables to create a redundant drive-channel path from the DS3300 RAID controllers to the EXP3000 ESMs.

Connecting secondary interface cables

This section applies to direct (out-of-band) management configurations only. If your configuration uses host-agent (in-band) management, skip this section.

Use the Ethernet management port on the rear of the storage subsystem to connect the controllers for direct management of the storage subsystems (see “Direct (out-of-band) management method” on page 35).

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Important: To minimize security risks, do not connect the DS3300 to a public LAN

or public subnet. Use a local private network for the DS3300 and the management station Ethernet connectors.

Chapter 3. Cabling the storage subsystem 33

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Connect an Ethernet cable from the management station to the Ethernet connector on controller A on the rear of the storage subsystem. For a dual-controller storage subsystem, you can connect a second Ethernet cable from the management station to the Ethernet connector on controller B. Figure 20 shows the locations of the Ethernet management connectors on the DS3300 storage subsystem.

Ethernet management

Controller A Controller B

Figure 20. Ethernet port locations on a dual-controller DS3300

connector

Configuring the storage subsystem

You must configure the storage subsystem after you install the storage subsystem in a rack cabinet. Use the information in the following sections to configure your storage subsystem.

Storage subsystem management methods

Before you configure the storage subsystem, determine which method of storage subsystem management you want to use. You can manage the storage subsystems in either of two ways: host-agent (in-band) management or direct (out-of-band) management.

Note: For information about any in-band limitations or restrictions that are

associated with particular combinations of controller and host bus adapter, see the DS3000 Storage Manager Version 2 readme file.

Ethernet management connector

For more information about setting up in-band or out-of-band management connections, see the DS3000 Storage Manager Version 2 Installation and Support Guide for the operating system of the host server that you will use to manage the DS3300 storage subsystem. The Installation and Support Guide is in the Documentation folder on the IBM System Storage DS3000 Support CD.

Important: If the operating system of the host server that the storage subsystem

logical drives are mapped to is not Microsoft Windows 2000 or Windows Server 2003, you must make a direct (out-of-band) management connection to the storage subsystem to set the correct host type first. Then, the server will be able to recognize the storage subsystem correctly for host-agent (in-band) management.

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Host-agent (in-band) management method

This method requires that host-agent software be installed on the host server. The host-agent software enables the DS3000 Storage Manager client program to manage the DS3300 storage subsystem by using the same connections between the host server and the storage subsystem. You must install at least one management station and a software agent host. The management station can be the host or a workstation on the Ethernet network. The client software is installed on the management station. Figure 21 shows the host-agent (in-band) management method.

Controller

Note: The client software is installed on one or more management systems, or on the host computer.

Figure 21. Host-agent (in-band) managed storage subsystems

Host-agent software

I/O path

Ethernet

Client software

Management station (one or more)

Direct (out-of-band) management method

This method uses Ethernet connections from a management station to each controller in the storage subsystem. You must install at least one management station. The management station can be the host or a workstation on the Ethernet network. The client software is installed on the management station. Attach Ethernet cables to each management station (one pair per storage subsystem). You will connect the cables to each storage subsystem controller later when you install the storage subsystem. Figure 22 on page 36 shows the direct (out-of-band) management method.

Note: Do not connect the DS3300 storage subsystem Ethernet ports to a public

network or public subnet. To minimize security risks, create a private network between the DS3300 storage subsystem and the management station.

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Host computer

I/O path

Controller

Storage subsystems

Ethernet

Management station

(one or more)

Figure 22. Direct (out-of-band) managed storage subsystems

Installing the storage subsystem configuration

Using the information from the previous sections, install the host systems, and either hardware or software iSCSI initiators.

Notes:

1. See the documentation that comes with the hardware and software initiators for installation requirements and procedures.

2. Use the correct HBA device driver. For the latest supported HBAs and device drivers, go to http://www.ibm.com/servers/storage/support/disk/

Attach the cables to each host. Continue to “Connecting hosts to the DS3300” to connect the other end of each cable to a controller.

Connecting hosts to the DS3300

The DS3300 can support up to 16 hosts, depending on the number of host ports and host partitions that are used on the DS3300 RAID controller. To protect against the loss of any one path from the host servers to the DS3300 storage subsystem, use redundant host connections.

To connect a hardware or software iSCSI initiator to the DS3300 storage subsystem, complete the following steps:

1. Connect a Category 5e or Category 6 Ethernet cable from the DS3300 RAID controller host port to a gigabit Ethernet switch, and then connect an Ethernet cable from the switch to the hardware or software iSCSI initiator port that is in the host. Figure 13 on page 23 shows the DS3300 host ports.

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2. Create a redundant host connection: v If the DS3300 is a single-controller storage subsystem, connect an Ethernet

cable from the second host port on the DS3300 RAID controller to a gigabit Ethernet switch.

v If the DS3300 is a dual-controller storage subsystem, connect an Ethernet

cable from the host port on the other RAID controller on the DS3300 to a gigabit Ethernet switch.

Notes:

1. Do not configure any two interfaces on the same subnet.

2. If you are using DHCP on more than one interface, multiple interfaces can end up on the same subnet.

For illustrations of host connections, see “DS3300 single-controller connections” and “DS3300 dual-controller configurations” on page 40.

DS3300 single-controller connections

The following illustration shows a single controller DS3300 that is attached to a single host. This configuration has no redundancy.

Host system

with one iSCSI

connector

Gigabit

Ethernet

switch

DS3300

Figure 23. Single-host, single-controller configuration

A system with dual iSCSI ports can provide enhanced performance compared to a system that uses only one iSCSI port.

Chapter 3. Cabling the storage subsystem 37

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The following illustration is an example of a host that is using multiple ports that are attached to a single-controller configuration. This configuration provides some path redundancy.

Host system

with two iSCSI

connectors

Gigabit

Ethernet

switch

DS3300

Figure 24. Multiple-port, single-controller configuration

The following illustration is an example of multiple single-port host systems that are connected to a single-controller DS3000 using multiple connections.

Host system

with one iSCSI

connector

Gigabit

Ethernet

switch

DS3300

Host system

with one iSCSI

connector

Figure 25. Multiple single-port hosts, single-controller configuration

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For cluster configurations, the following illustration is an example of a multiple-host, multiple-port, single-controller, and redundant-path configuration.

Host system

with two iSCSI

connectors

Gigabit

Ethernet

switch

DS3300

Host system

with two iSCSI

connectors

Gigabit

Ethernet

switch

Figure 26. Multiple-host, multiple-port, single-controller, and redundant-path configuration

You can replace the two gigabit Ethernet switches that are shown in Figure 26 and Figure 27 with one large gigabit Ethernet switch that has the required number of ports. Virtual local area network (VLAN) can also be used to isolate the two iSCSI networks, instead of a single switch.

Host system

with two iSCSI

connectors

Gigabit

Ethernet

switch

DS3300

Host system

with two iSCSI

connectors

Gigabit

Ethernet

switch

DS3300

Figure 27. Multiple-host, multiple-port, multiple-storage-subsystem configuration

Chapter 3. Cabling the storage subsystem 39

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DS3300 dual-controller configurations

The following illustration is an example of a multiple port, single-host configuration. A system that uses multiple iSCSI ports can provide enhanced performance compared to a single-port iSCSI connection.

Host system

with two iSCSI

connectors

Gigabit

Ethernet

switch

DS3300

Figure 28. Single-host, multiple-port, dual-controller configuration

For cluster configurations, the following illustration is an example of a multiple-host, multiple-port, and redundant path and controller configuration.

You can replace the two gigabit Ethernet switches that are shown in Figure 29 with one large gigabit Ethernet switch that has the required number of ports. Virtual local area network (VLAN) can also be used to isolate the two iSCSI networks, instead of a single switch.

Host system

with two iSCSI

connectors

Gigabit

Ethernet

switch

DS3300

Host system

with two iSCSI

connectors

Gigabit

Ethernet

switch

Figure 29. Multiple-host, multiple-port, dual-controller configuration

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Cabling the DS3300 power supplies

To connect the DS3300 power-supply cords, complete the following steps:

1. Connect a power cord to a power supply in the DS3300.

2. Attach the power cord to the strain relief guide that is on the underside of the power-supply handle.

3. Repeat steps 1 and 2 for the second power supply.

4. Connect the other end of each power cord to a correctly grounded electrical receptacle. For maximum protection against power loss, connect each of the two power supplies to a different power source.

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Chapter 4. Operating the storage subsystem

This chapter describes operating procedures for the DS3300.

To ensure optimal operation of the storage subsystem, see “Best practices guidelines” on page 6.

Performing the DS3000 Health Check process

The DS3000 Health Check process is a sequence of suggested actions that were developed by IBM to help you verify and maintain the optimal performance of the DS3300 storage configuration. The information that you collect in these steps also helps provide IBM Service with important information that is needed during a service call.

Perform the following Health Check tasks after the initial configuration of the DS3300 storage subsystems and after all configuration sessions. Set a regular schedule of periodic Health Check evaluations to keep the DS3300 code current and to preserve optimal data access and performance.

1. Monitor the Recovery Guru in the Storage Manager software for any obvious storage subsystem errors or problem conditions.

2. Gather and save the following DS3300 storage subsystem event logs for review by IBM Service. These event logs should be gathered periodically for regular Health Check monitoring regardless of the state of the Recovery Guru. (You can collect all these logs at once and compress them into a single file by clicking the Support tab and then Gather Support Information in the DS3000 Storage Manager Subsystem Management window.)

v DS3300 storage subsystem management event log (MEL) v Storage Subsystem Profile or DS3300 Profile v SAS PHY error log

In addition, you should also collect event logs for the host servers that have mapped logical drives from the storage subsystem.

Attention: Save these event-log files to a server disk that will remain accessible in the event of a DS3300 storage configuration failure. Do not save these event log files only to a LUN in the DS3300 storage subsystem.

3. Use the Storage Subsystem Profile or DS3300 Profile to make sure that the following firmware levels are at the latest versions that the DS3300 storage subsystem supports:

v Controller firmware v ESM firmware v Drive firmware

If the firmware is not up-to-date, upgrade the firmware and software to the latest level that is applicable to the DS3300 storage configuration. See “Overview” on page 1 for information about where to find the latest firmware and software.

Attention: You must resolve Recovery Guru errors or problems before you upgrade firmware.

Save the storage subsystem profile before you perform any controller or ESM firmware upgrades. Save the storage subsystem profile and all .cfg files to a server disk that will remain accessible in the event of a DS3300 storage configuration failure.

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4. Use the Storage Subsystem Profile or DS3000 Profile to make sure that the following functions are enabled:

v For all DS3000 models, enable Media Scan both at the controller level and at

the LUN level.

v For all DS3000 models, enable the read/write cache. In addition, use the

Storage Subsystem Profile to make sure that cache is matched between the controllers.

Hardware inspection

In addition to the Health Check process, regular hardware inspection and maintenance helps to support the optimal performance of the DS3300 storage configuration. Periodically inspect the components of the DS3300 storage configuration.

For best results, follow these guidelines: v Maintain an up-to-date storage subsystem profile for the DS3300 storage

configuration. Save the profile to a server disk that will remain accessible in case of a DS3300 storage configuration failure. Do not save the profile only to a LUN in the DS3300 storage subsystem.

v Develop a change-management plan. The plan should include schedules for

updating subsystem firmware and server host software.

Note: Some updates might require storage subsystem downtime.

v Use applicable IBM-approved cables for all situations. Note in the configuration

documentation whether any cables are not IBM-approved.

v Create and maintain a cabling diagram of the current configuration. Keep this

diagram updated as you make configuration changes, and keep the cabling diagram available for review.

v Create and maintain a list of other components that are being used within the

cabling diagram (such as the host system and other attached devices).

v Make sure that all controllers and ESMs are correctly seated. v Make sure that all drives are correctly seated. v Make sure that cables are managed correctly. v Ensure proper air flow and temperature for all components in the storage

configuration.

You can find details about many of these inspection and maintenance responsibilities in the applicable sections of this document.

In addition to these inspection and maintenance responsibilities, conduct DS3300 training for staff that support DS3300 storage configurations. Although training is not a part of the Health Check process, training reduces the potential for configuration problems and contributes to the correct operation of the system.

Turning on the storage subsystem

This section contains instructions for turning on the storage subsystem under normal situations. “Turning off the storage subsystem” on page 54 contains instructions for turning off the storage subsystem under normal and emergency situations. When you turn on and turn off the DS3300, be sure to use the startup sequence that is described in this section. If you are turning on the storage subsystem after an emergency shutdown or power outage, see “Restoring power after an unexpected shutdown” on page 56.

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The following procedure addresses two situations: v The entire storage subsystem has been shut down (the main circuit breakers for

the rack cabinet are off).

v Some storage expansion enclosures are being powered-on while others remain

online (the main circuit breakers for the rack cabinet are on). You might encounter this if you are adding a storage expansion enclosure to increase storage capacity.

Attention:

1. Repeatedly turning the power off and on without waiting for the drives to spin down can damage the drives. Always wait at least 70 seconds after you turn off the power before you turn it on again.

2. If you are connecting a power cord to a DS3300 or storage expansion enclosure, turn off both of its power switches first. If the main circuit breaker is off, make sure that both power switches are off on each storage expansion enclosure in the rack cabinet before you turn on the main circuit breakers.

1. Are the main circuit breakers turned on? v Yes: Turn off both power switches on each enclosure that you intend to

connect to the power.

v No: Turn off both power switches on all enclosures in the storage subsystem.

2. Make sure that all power cords are connected.

Note: If the power cords are not connected, turn off both power switches on all

modules in the configuration before you connect power cords or turn on the main circuit breakers.

3. If the main circuit breakers are turned off, turn them on. Attention: You must turn on power to each attached storage expansion

enclosure before you turn on power to the DS3300 so that the controllers recognize all drives in the configuration during the startup process.

4. Turn on both power switches on the rear of each storage expansion enclosure that is attached to the storage subsystem.

Check the LEDs on the front and rear of all the storage expansion enclosures. Make sure that no amber LEDs are lit on any of the storage expansion enclosures.

5. Turn on both ac power switches on the rear of the storage subsystem. Figure 30 shows the locations of the ac power switches on the DS3300.

Figure 30. Power-supply switches and connectors for the DS3300

Depending on the number of storage expansion enclosures in the configuration, the storage subsystem might take up to 10 minutes to fully power-on. While each storage enclosure powers-on, the green and amber LEDs on the front and rear of the storage expansion enclosure turn on and off intermittently. The cache

Power switch

Power connector

Power switch

Chapter 4. Operating the storage subsystem 45

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battery backup self-test might take up to an additional 15 minutes to be completed. During this time, the LEDs on the front and rear of the storage subsystem might flash intermittently.

6. Determine the status of all storage subsystems and components in the configuration by completing the following steps:

a. Check all LEDs on each component in the storage expansion enclosures.

Make sure that all the LEDs show normal status. For more information about LED status for storage expansion enclosures, see “Checking the LEDs” on page 49 or the Installation, User’s, and Maintenance Guide for the storage expansion enclosure.

b. Check all LEDs on each component in the storage subsystem. Make sure

that all the LEDs show normal status. For information about LED status, see Chapter 6, “Solving problems,” on page 95.

c. Open the DS3000 Storage Manager Subsystem Management window, and

display the status of the storage subsystem.

7. Are the LEDs indicating normal operation, and is the status Optimal on all the configuration components?

v Yes: The procedure is complete. v No: Go to step 8.

8. Diagnose and correct the fault by completing the following steps: a. Run the DS3000 Storage Manager Recovery Guru by clicking Recovery

Guru in the Subsystem Management window toolbar.

b. Complete the recovery procedure.

If the Recovery Guru directs you to replace a failed component, use the individual LEDs on the storage subsystem to locate the specific failed component. For troubleshooting procedures, see Chapter 6, “Solving problems,” on page 95.

c. When the recovery procedure is completed, select Recheck in the Recovery

Guru. This action runs the Recovery Guru again to make sure that the problem is corrected.

d. If the problem remains, contact your IBM technical-support representative.

Installing the DS3000 Storage Manager Client

See the IBM System Storage DS3000 Storage Manager Version 2 Installation and Support Guide for instructions for installing the DS3000 Storage Manager software. The Installation and Support Guide is in the Documentation folder on the IBM System Storage DS3000 Support CD. Use that document and the online help to

configure the logical drives, partitions, and so on for the RAID controllers. Follow the instructions in the operating-system documentation to make the new logical drives accessible to the operating system. Do not proceed with the configuration setup until you have completed the Storage Manager software installation.

Assemble any additional items in preparation for software installation. These items might include the following items:

v HBA device drivers v Controller firmware v IP addresses for RAID controllers (management and data ports) v Additional documentation for hosts, HBAs, and storage expansion enclosures

Before any planned system shutdown or after any system additions, removals, or modifications (including firmware updates, logical drive creations, storage

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partitioning definitions, hardware changes, and so on), save the storage subsystem profile as explained in the DS3000 Storage Manager guide for the operating system. Save the profile in a location other than the logical drives that are created for the DS3300.

Always see the readme file that is included with the DS3300 storage subsystem firmware package (whether the firmware is accessed by the Web or a CD) for any special requirements or restrictions that apply to that firmware version.

Note: Be sure to install the DS3000 Storage Manager event monitoring service to

enable continuous monitoring of the status of the storage subsystem. For more information about the importance of this information, see “Monitoring status through software.”

Monitoring status through software

Use the DS3000 Storage Manager software to monitor the status of the storage subsystem. Run the software constantly, and check it frequently.

Notes:

1. You can monitor only storage subsystems that are within the management domain of the storage-management software.

2. If you have not installed the DS3000 Storage Manager Event Monitor service as part of the storage-management software installation, the DS3000 Storage Manager Enterprise Management window must remain open. (If you close the window, you will not receive any alert notifications from the managed storage subsystems.)

For more information, see the Enterprise Management online help.

Important: See the IBM System Storage DS3000 Storage Manager Version 2

Installation and Support Guide for instructions for installing the DS3000

Storage Manager software. The Installation and Support Guide is in the Documentation folder on the IBM System Storage DS3000 Support CD.

To download the latest version of the DS3000 Storage Manager software, the DS3300 storage subsystem controller firmware and NVSRAM, and the latest DS3000 ESM firmware, go to http://www.ibm.com/servers/storage/support/disk/.

The DS3000 Storage Manager software provides the best way to diagnose and repair storage-subsystem failures. The software can help you:

v Determine the nature of the failure v Locate the failed component v Determine the recovery procedures to repair the failure

Amber (needs attention) LEDs do not necessarily indicate which component has failed or must be replaced or which type of recovery procedure you must perform. In some cases (such as when a hard disk drive exceeds its Predictive Failure Analysis [PFA] threshold), the amber LED is not lit. Only the DS3000 Storage Manager software can detect the failure.

For example, the recovery procedure for a PFA flag (impending drive failure) on a drive varies depending on the drive status (hot spare, unassigned, RAID level, current logical drive status, and so on). Depending on the circumstances, a PFA flag on a drive can indicate a high risk of data loss (if the drive is in a RAID 0

Chapter 4. Operating the storage subsystem 47

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volume) or a minimal risk (if the drive is unassigned). Only the DS3000 Storage Manager software can identify the risk level and provide the necessary recovery procedures.

Note: For PFA flags, the system-error LED and hard disk drive status LEDs are not

Recovering from a storage-subsystem failure might require you to perform procedures other than replacing the component (such as backing up the logical drive). The DS3000 Storage Manager software provides these procedures.

Attention: Not following the software-recovery procedures can result in data loss. In addition, always replace a failing component as soon as possible to minimize additional failures that might occur, causing loss of data access.

Firmware updates

Attention: Save the storage subsystem profile before you perform any controller

or ESM firmware upgrades. Save the profile and all configuration (.cfg) files to a server disk that will remain accessible in the event of a DS3300 storage configuration failure. Do not save these files only to a LUN in the storage subsystem.

lit, so checking the LEDs will not notify you of the failure, even if the risk of data loss is high.

To ensure the optimal operation of the storage subsystem and its attached storage expansion enclosures, the storage expansion enclosure ESM firmware, the DS3300 controller firmware, the hard disk drive firmware, and the NVSRAM (for controllers only) must be up-to-date. Go to http://www.ibm.com/servers/storage/support/disk/ to get the latest updates.

Always see the readme files that are included with the firmware packages for the most up-to-date information about firmware prerequisites, firmware update instructions, download-sequence information, and host I/O restrictions, if any. Apply the necessary updates before you configure the storage subsystem arrays and logical drives. Subscribe to My Support for automatic notifications of firmware or Storage Manager software updates or any important information about the DS3000 storage subsystems (see “Product updates” on page 5).

Attention: Failure to observe the limitations, prerequisites, sequences, and dependencies in the readme file might result in a loss of data access.

Unless the readme file contains special requirements for the sequence in which you upgrade firmware, perform firmware upgrades in the following sequence:

1. ESM firmware for the storage expansion enclosures

2. Controller firmware

3. Controller NVSRAM

4. Drive firmware

Troubleshooting the storage subsystem

The DS3000 Storage Manager software is the best way to monitor the storage subsystem, diagnose a problem, and recover from a hardware failure. Run the DS3000 Storage Manager continuously, and frequently check the configuration status.

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To check the status of and identify a problem with the storage subsystem, complete the following steps. If a problem has occurred, use the DS3000 Storage Manager software and the LEDs on the storage subsystem to help locate a failed component.

1. Open the Subsystem Management window.

2. Click the Summary tab, and view the status of the storage subsystem.

3. Does any storage subsystem have a Needs Attention status?

v Yes: Go to step 4. v No: All components are Optimal. Go to step 5.

4. Click Recovery Guru on the toolbar. Perform the procedure in the Recovery Guru to correct the problem. The Recovery Guru might direct you to replace the failed component. If so, go to step 5.

Attention: If the fault requires you to power-off an attached storage expansion enclosure, you might have to cycle the power on the DS3300 storage subsystem and all remaining storage expansion enclosures that are connected to the storage subsystem. Contact your IBM technical-support representative before you power-off any attached storage expansion enclosures.

5. Check the LEDs on the front and the rear of the storage expansion enclosure. A green LED indicates a normal status; an amber LED indicates a hardware fault.

6. Is an amber LED lit? v Yes: Locate and troubleshoot the failed components. See “Checking the

LEDs.”

v No: You are finished with this procedure. If you are still experiencing a

problem with the storage subsystem, create, save, and print a storage subsystem profile, and contact your IBM technical-support representative for assistance. When the recovery procedure is completed, select Recheck in the Recovery Guru to run the Recovery Guru again to make sure that the problem is corrected.

Checking the LEDs

The LEDs indicate the status of the storage subsystem and components. Green LEDs indicate a normal operating status; amber LEDs (needs attention) indicate a possible failure; a blue LED on a component indicates that it is safe to remove that component.

The DS3300 also has a blue system locator LED that is lit when the menu function is selected in the Subsystem Management window, causing the Locate command to be sent to the DS3300.

Check all the LEDs on the front and rear of the storage subsystem when you turn on the power. During power-on, the LEDs flash intermittently as the storage subsystem and components complete the power-on process. In addition to checking for faults, you can use the LEDs on the front of the storage subsystem to determine whether the drives are responding to I/O transmissions from the host.

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Power-supply LEDs

This section describes the primary LEDs on the DS3300 power supplies.

DC power LED (green)

OK to remove LED (blue)

Figure 31. Power-supply LEDs

DC power LED (green)

OK to remove LED (blue)

Fault LED (amber)

AC power LED (green)

When this green LED is lit, it indicates that the DS3300 is turned on and is supplying both 5-volt and 12-volt dc power to the DS3300.

When this blue LED is lit, it indicates that it is safe to remove the power-supply unit.

When this amber LED is lit, it indicates that a power supply or fan has failed or that a redundant power supply is not turned on.

AC power LED (green)

When this green LED is lit, it indicates that the DS3300 is receiving ac power.

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Front LEDs

This section describes the primary LEDs and controls on the front of the DS3300 storage subsystem.

Hard disk drive activity LED

Hard disk drive status LED

Power-on LED System locator LED Overtemperature LED System error LED

Figure 32. Front LEDs and controls

System Storage

Power-on LED (green)

When this green LED is lit, it indicates that the power supply is turned on and is supplying both 5-volt and 12-volt dc power to the DS3300.

System locator LED (blue)

This blue LED can be lit by the DS3000 Storage Manager software to aid in visually locating the DS3300.

Overtemperature LED (amber)

When this amber LED is lit, it indicates that the DS3300 is in an overtemperature condition.

System error LED (amber)

When this amber LED is lit, it indicates that the unit has a fault, such as in a power supply, controller, or hard disk drive.

Hard disk drive activity LED (green)

Each hard disk drive has an activity LED. When this green LED is flashing, it indicates drive activity.

Hard disk drive status LED (amber)

Each hard disk drive has a status LED. When this amber LED is lit continuously, it indicates a drive failure. When it is flashing, it indicates that a drive identify or rebuild activity is in progress.

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Controller LEDs

This section describes the controller LEDs on the rear of the storage subsystem.

Cache active (green) Service action required (amber)

Battery fault (amber)

Figure 33. Controller LEDs

Service action allowed (blue)

Power (green)

Ethernet speed

Ethernet activity

Battery fault (amber)

When this LED is lit, it indicates that the battery fails to hold a charge and should be replaced. The normal condition of this LED is off.

Cache active (green)

When this LED is lit, it indicates that data is in the memory cache. When this LED is off, caching is turned off; no data is in the memory cache.

Service action allowed (OK to remove) (blue)

When this LED is lit, it indicates that it is safe to remove the controller from the DS3300; no activity is taking place, and no data remains in the memory cache. The normal condition of this LED is off.

Service action required (fault) (amber)

When this LED is lit, it indicates that a fault has occurred in the controller and the controller must be replaced. The normal condition of this LED is off.

SAS link service action (amber)

SAS link up

Power (green)

When this LED is lit, it indicates that the controller is receiving power. When this LED is off, the controller is not receiving power.

Ethernet speed

When this LED is lit, it indicates that the Ethernet speed between the controller and the management workstation is 100 Mbps. When this LED is off, it indicates that the Ethernet speed is 10 Mbps.

Ethernet activity

When this LED is lit, it indicates that the link is established between the controller and the management workstation. When this LED is flashing, there is activity between the controller and the management workstation. When this LED is off, no link is established between the controller and the management workstation.

SAS link service action (amber)

When this LED is lit, it indicates a problem with the SAS link that requires service action. The normal condition of this LED is off.

SAS link up (green)

When this LED is lit, it indicates that the link is established between the controller and a host. When this LED is flashing, it indicates activity on the link. When this LED is off, no link is established.

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The iSCSI LEDs are showin in the following illustration.

iSCSI activity

iSCSI speed

Figure 34. iSCSI LEDs

iSCSI speed (amber)

When this LED is lit, it indicates that the port is operating at 1000 Mbps. When this LED is off, it indicates that the speed of the port is 100 Mbps.

iSCSI activity (green)

When this LED is lit, it indicates that the link is established with the controller. When this LED is flashing, there is activity on this port. When this LED is off, no link is established with this port.

iSCSI speed

iSCSI activity

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Turning off the storage subsystem

The DS3300 is designed to run continuously. After you turn it on, do not turn it off. Turn off the power only in the following situations:

v Instructions in a hardware or software procedure require that you turn off the

power.

v An IBM technical-support representative instructs you to turn off the power. v A power outage or emergency situation occurs, see “Restoring power after an

unexpected shutdown” on page 56.

Attention: Except in an emergency, never turn off the power if any amber (needs attention) LEDs are lit. Correct the fault before you turn off the power. Use the DS3000 Storage Manager software and the amber LEDs to check the overall status of the DS3300. All LEDs should be green on the front of the storage subsystem. If they are not, use the DS3000 Storage Manager software to diagnose the problem so that the DS3300 will power-on correctly later.

(L003)

Attention: Turning off and turning on power without waiting for the storage subsystem disk drives to spin down can damage the drives and might cause data loss. Always wait at least 70 seconds after you turn off the power before you turn on the power again.

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Power-off overview

Review the following information before you continue with the power-off procedure:

Turn off the power to each device according to the following shutdown sequence:

1. Turn off power to the host before the storage subsystem. If the host must stay powered-on to support a network, see the operating-system documentation for information about disconnecting the storage subsystem logical drives from the host before the storage subsystem is powered-off.

2. Turn off power to the storage subsystem before you turn off power to the storage expansion enclosures. Turn off both power-supply switches on the rear of the storage subsystem.

3. Turn off power to other supporting devices (for example, management stations).

Note: You do not have to perform this step if you are servicing only the

storage subsystem.

To turn off power to one or more storage subsystems for a planned shutdown, complete the steps in the following procedure. To turn off power for an unplanned shutdown, see “Restoring power after an unexpected shutdown” on page 56. Figure 30 on page 45 shows the locations of the power switches on a storage subsystem.

Before you proceed, use the Storage Manager software to determine the status of the system components and special instructions. The operating-system software might require you to perform other procedures before you turn off the power.

1. Stop all I/O activity to each storage subsystem.

2. Determine the status of all storage subsystems and components in the configuration by completing the following steps:

a. Check all LEDs on each component in the storage expansion enclosures.

Make sure that all the LEDs show normal status.

b. Check all LEDs on each component in the storage subsystem. Make sure

that all the LEDs show normal status.

c. Review the status of the configuration in the Subsystem Management

window by clicking the Summary tab. The status is either Optimal or Needs Attention.

3. Do the LEDs indicate normal operation, and is the status Optimal on all configuration components?

v Yes: Go to step 5 on page 56. v No: Go to step 4.

4. To diagnose and correct the fault, complete the following steps: a. Run the Recovery Guru by clicking Recovery Guru in the toolbar in the

Subsystem Management window.

b. Complete the recovery procedure.

If the Recovery Guru directs you to replace a failed component, use the individual LEDs to locate the failed component.

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c. When the recovery procedure is completed, click Recheck in the Recovery

Guru. This action runs the Recovery Guru again to make sure that the problem is corrected.

d. If the problem has not been corrected, contact your IBM technical-support

representative. Do not turn off power until all problems are corrected.

5. Check the cache active LED, and make sure that it is off. If the cache active LED is lit, the cache contains data. Wait for the data to clear

from cache memory before you turn off the power.

6. Check the LEDs on the storage expansion enclosures to make sure that all drive activity LEDs are off.

If one or more LEDs are flashing, data is being written to or from the drives. Wait for all activity LEDs to stop flashing.

7. Turn off the ac power switch on the rear of each controller in the storage subsystem.

Note: Until the power switch on each controller is turned off, power remains

turned on for both controllers.

8. Turn off both power switches on the rear of each storage expansion enclosure in the configuration.

9. After you perform the necessary maintenance procedures, turn on the power, using the procedure in “Turning on the storage subsystem” on page 44.

Performing an emergency shutdown

Attention: Emergency situations might include fire, flood, extreme weather

conditions, or other hazardous circumstances. If a power outage or emergency situation occurs, always turn off all power switches on all computing equipment. This helps to safeguard your equipment from potential damage due to electrical surges when power is restored. If the storage subsystem loses power unexpectedly, it might be due to a hardware failure in the power system or in the midplane.

To shut down the system during an emergency, complete the following steps:

1. If you have time, stop all I/O activity to the storage subsystem by shutting down the host or disconnecting the storage subsystem logical drives through the host.

2. Check the LEDs. Make note of any amber LEDs that are lit so that you can correct the problem when you turn on the power again.

3. Turn off all power-supply switches, starting with the DS3300 storage subsystem first and followed by the storage expansion enclosures. Then, disconnect the power cables from the storage subsystem.

Restoring power after an unexpected shutdown

To restore power to the storage subsystem in a configuration after an unplanned shutdown, complete the following steps.

DANGER

Never turn on any equipment when there is evidence of fire, water, or structural damage.

1. After the emergency situation is over or power is restored, visually check the storage subsystem for damage. Is there evidence of damage to any of the storage subsystem components, cables, or equipment that is attached to the storage subsystem?

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v Yes: Do not continue with this procedure. Contact your IBM technical-support

representative for assistance. Depending on the current service agreements, you might have to return the equipment to the factory or local service center for repair.

v No: Go to step 2.

Attention: To avoid potential data loss, make sure that the storage

subsystem and storage expansion enclosure power switches are turned off before you reset circuit breakers in the rack cabinet. Resetting circuit breakers after an emergency situation while the storage subsystem and storage expansion enclosure power switches are turned on can cause data loss, because the configuration components might not be powered-on in the correct sequence. See “Turning on the storage subsystem” on page 44 for details about the correct power-on sequence.

2. After you check the storage subsystem for damage, make sure that the power switches are off; then connect the DS3300 power cables, if required.

3. Check the system documentation of the hardware devices that you want to turn on and determine the correct startup sequence.

Be sure to turn on all of the storage expansion enclosures and make sure that no ESM or power-supply fault LEDs are lit before you turn on the DS3300.

In addition, consider the following items: v The storage subsystem supports simultaneous power-on of the system

components; however, always follow the power-on sequence that is described in the “Turning on the storage enclosure" section of the applicable Installation, User’s, and Maintenance Guide during any attended power-on procedure.

v A storage subsystem in an optimal state recovers automatically from an

unexpected shutdown and unattended simultaneous restoration of power to system components. After power is restored, contact your IBM technical-support representative if any of the following conditions occur:

– The storage subsystem logical drives and subsystems are not displayed in

the Storage Manager graphical user interface. – The storage subsystem logical drives and subsystems do not come online. – The storage subsystem logical drives and subsystems seem to be

degraded.

4. Turn on the power to each device, according to the startup sequence.

5. Turn on both of the power-supply switches on the DS3300. The green LEDs on the front and the rear of the DS3300 should remain lit. If other amber LEDs are lit, see Chapter 6, “Solving problems,” on page 95.

Recovering from an overheated power supply

Each storage subsystem contains two power supplies. Each power supply contains a built-in temperature sensor to prevent the power supply from overheating. Under normal operating conditions, with an ambient air temperature range of 10°C to 35°C (50°F to 95°F), the fans in the power-supply units maintain a suitable operating temperature inside the module.

If the internal temperature reaches 65°C (149°F), the power supply shuts down automatically. If both power supplies shut down because of overheating, the storage subsystem has no power, and all LEDs are off.

The following factors can cause the power supplies to overheat:

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v An unusually high room temperature v Fan failures in the power-supply units v Defective circuitry in a power supply v Blocked air vents v Failures in other devices in the configuration or rack cabinet

If a fan failure causes overheating, the system-error LED and overtemperature LEDs on the storage subsystem are lit. The fault LED on the power supply might also be lit. “Checking the LEDs” on page 49 shows the location of the LEDs on the DS3300.

If the storage subsystem temperature exceeds 45°C (113°F), the storage management software displays a Needs Attention icon in the Subsystem Management window. If the air temperature inside the rack cabinet reaches 65°C (149°F), the power supplies automatically shut down. If event monitoring is enabled and event notification is configured, the software issues two critical-problem notifications.

v If one power supply shuts down, the storage management software displays a

Needs Attention status in the Subsystem Management window.

v If both power supplies shut down, the storage subsystem shuts down, and the

storage management software displays a Not Responding status in the Array Management window.

Attention: To prevent damage to the DS3300 storage subsystem components when the power supplies automatically shut down, immediately remove all rack cabinet panels to help reduce the rack cabinet air temperature.

To resume normal operation after a power-supply shutdown, complete the following steps:

1. Did you use the procedure “Troubleshooting the storage subsystem” on page 48 to identify an overheating problem?

v Yes: Go to step 2. v No: Perform the procedure in “Troubleshooting the storage subsystem” on

page 48 to make sure that the power supplies have shut down because of an overheating problem, and then go to step 2.

2. Stop I/O activity to the storage subsystem and all attached storage expansion enclosures.

3. Take all or some of the following measures to alleviate the overheating problem:

v Remove all panels from the rack cabinet immediately. v Use external fans to cool the area. v Shut down the power to the storage expansion enclosure, using the

procedure that is described in “Performing an emergency shutdown” on page 56.

4. Wait for the air in and around the storage subsystem to cool. After the temperature inside the power supplies drops to below 65°C (149°F),

the storage subsystem is capable of power-on recovery without operator intervention. After the air has cooled, the power supplies should turn on automatically. If the power supplies restart automatically, the controllers will reset and return to normal operation.

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5. Did the power supplies restart automatically?

v Yes: Go to step 8. v No: Go to step 6.

6. Turn off both power switches on the DS3300 (see Figure 30 on page 45) and then power-off all connected storage expansion enclosures. Wait 1 minute and then turn on power to all connected storage expansion enclosures.

While a storage expansion enclosure powers-on, the LEDs on the front and the rear of the enclosure flash intermittently. Depending on your configuration, the storage expansion enclosure can take between 20 seconds and several minutes to power-on.

7. Turn on both power switches on the rear of the DS3300. See Figure 30 on page 45.

A storage subsystem can take 10 seconds to power-on and up to 15 minutes for the battery self-test to be completed. During this time, the LEDs on the front and the rear of the DS3300 flash intermittently.

8. Check the LEDs on the front and rear of the DS3300 storage subsystem and each attached storage expansion enclosure (a green LED indicates a normal status; an amber LED indicates a hardware fault); then, check the array status in the Subsystem Management window.

a. Open the Subsystem Management window for the storage array. b. Click the Summary tab and review the status of the configuration.

The status is either Optimal or Needs Attention.

9. Does each module (RAID controller, power supply, ESM) display green status LEDs only, and is the status Optimal for each module component?

v Yes: Go to step 11. v No: Go to step 10.

10. Diagnose and correct the fault. a. To run the Recovery Guru, click Recovery Guru in the toolbar in the

Subsystem Management window.

b. Complete the recovery procedure.

If the Recovery Guru directs you to replace a failed component, locate and troubleshoot that component. See “Checking the LEDs” on page 49.

c. When the procedure is completed, select Recheck in the Recovery Guru.

This runs the Recovery Guru again to make sure that the problem is corrected.

d. If the problem remains, contact your IBM technical-support representative.

11. Replace the bezel on the storage expansion enclosure, if applicable.

Cache memory and cache battery

Each RAID controller in the DS3300 storage subsystem supports either 512 MB or 1 GB of cache memory to store read and write operations. (Both RAID controllers in the DS3300 must have the same amount of cache memory.) The battery in each controller can maintain the data in the RAID controller cache for up to 3 days in the event that the DS3300 storage subsystem loses power.

Cache memory

Cache memory is memory on the RAID controller that is used for intermediate storage of read and write data on the DS3300 RAID controllers. Using cache memory can increase system performance. The data for a read operation from the

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host might be in the cache memory from a previous operation (thus eliminating the need to access the drive itself), and a write operation is completed when it is written to the cache, rather than to the drives.

The RAID controller has a cache active LED that indicates the current status of the cache. The LED is lit if there is data in the cache, and it is off if there is no data in the cache.

If caching is enabled and the cache active LED is not lit during I/O activity, it indicates one of the following conditions:

v The cache memory from either controller A or controller B has failed. v The cache sizes in controller A and controller B are not the same. v The battery has failed. (In this case, the amber battery fault LED is lit.)

Note: Always use the DS3000 Storage Manager software to check the cache

memory settings before you assume that a hardware failure has occurred.

See “Controller LEDs” on page 52 for the location of the cache active LED on a RAID controller.

Controller cache battery

The battery in each controller provides backup power to maintain any cached data that was not written to disks, in the event of a power loss. The battery in a controller can provide power to the data cache in the controller for up to 3 days.

CAUTION: The battery is a lithium ion battery. To avoid possible explosion, do not burn. Exchange only with the IBM-approved part. Recycle or discard the battery as instructed by local regulations. In the United States, IBM has a process for the collection of this battery. For information, call 1-800-426-4333. Have the IBM part number for the battery unit available when you call. (C007)

Replace a battery in the DS3300 when it is identified as failing by the DS3000 Storage Manager Subsystem Management window, or when the battery fault LED on the RAID controller is lit. See “Controller LEDs” on page 52 for the location of the battery fault LED.

If the DS3300 has two RAID controllers, replace only the battery that is indicated as failed in the DS3000 Storage Manager Subsystem Management window. You do not have to replace the batteries in both controllers if only one battery has failed.

The controller performs a learn-cycle test every thirteen weeks. During the learn-cycle test, the controller cache battery is discharged and then recharged to determine the full charge capacity of the battery pack and to extend the life of the battery.

Note: The controller performs a learn-cycle test after a controller cache battery is

replaced.

If the battery fails the learn-cycle test, the battery fault LED is lit, indicating a battery fault, and a Defect Battery error message is displayed in the event log.

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In the Storage Manager software, if the battery age timer indicates that the battery is 2 years old, but the battery is not reported as failed, do not call your IBM technical-support representative to replace the battery. Instead, reset the battery age by using the procedure that is described in the Storage Manager software online help.

Attention: Write caching is suspended while a battery is either charging or performing learn-cycle testing.

Controller battery age timer

The controller maintains a battery age timer for the controller cache battery. The timer is set to indicate when the battery is 2 years old. Thirty days before the battery expiration date, a warning message is displayed in the DS3000 Storage Manager software.

After you replace a controller cache battery, reset the battery age timer. For information about resetting the batter age timer, see the Storage Manager software online help.

If the controller is running firmware version 07.35.41.00 or later, the controller uses a smart battery learn-cycle test. The smart battery learn-cycle determines when the cache battery is defective and needs to be replaced. The battery learn-cycle test removes the need to rely on the battery age timer to determine the expiration date of the cache battery. If the cache battery expiration message is still displayed after you replace a controller cache battery, reset the battery age timer.

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Chapter 5. Replacing components

This chapter contains information about replacing the storage subsystem components.

Attention: Always replace a failed component as soon as possible. The Recovery Guru in the DS3000 Storage Manager software identifies failed components.

Service action allowed LED

Each controller and power supply has a blue service action allowed LED. The purpose of the service action allowed LED is to help ensure that a component is not removed before it is safe to do so. Do not remove any DS3300 component unless the component service action allowed LED is lit.

Attention

If you remove a controller or power supply when the service action allowed LED is not lit, a loss of data availability can result. If an amber LED is lit and the associated service action allowed LED is not lit, you must perform additional diagnostics before you can remove the indicated component. Use the Recovery Guru instructions in the DS3000 Storage Manager Subsystem Management window or see the applicable component replacement instructions in this chapter for the additional diagnostics that are required in this case.

The service action allowed LED automatically turns on or off as conditions change. Wait at least 2 minutes after you replace a component for the storage subsystem to recognize the new component and update the LED status. In most cases, when a single component fails, the service action allowed LED stays lit when the amber LED is lit for the component.

Removing a controller

Attention: Before you remove a controller in a single-controller DS3300, shut

down the DS3300 to avoid data loss (see “Turning off the storage subsystem” on page 54).

To remove a controller from the storage subsystem, complete the following steps:

1. Read the safety information that begins on page xi and “Best practices

guidelines” on page 6. Attention: Never remove a controller unless the service action allowed LED is

lit. Doing so can result in a loss of data.

2. If the controller has failed, do not continue with this procedure. Instead, go to

“Replacing a controller” on page 66. Attention: Handle and install I/O cables (such as SAS and Ethernet) correctly

to avoid degraded performance or loss of communication with devices. When you work with I/O cables, do not pinch them, step on them, or locate them in aisles or walkways. Do not overtighten the cable straps or bend the cables to a radius smaller than 38 mm (1.5 in.).

3. Disconnect all attached interface cables from the failed controller. Be sure to

label each cable so that you can reconnect it correctly.

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4. Remove the controller from the chassis.

Figure 35. Removing a controller

a. On the left side of the controller, press the orange release tab to the right

b. Slowly pull the handle away from the chassis to remove the controller from

c. Place the controller on a level surface.

Attention: After you remove a controller, wait 70 seconds before you reseat or replace the controller. Failure to do so might cause unpredictable results.

Installing a controller

Use this procedure to install a new controller as the second controller, controller B (controller A is installed in the left controller bay; controller B is installed in the right controller bay).

Attention: Make sure that the two controllers have the same cache memory capacity. An incompatible controller will be placed in a lockout state by the other controller in the DS3300.

To install a controller in the storage subsystem, complete the following steps:

1. Read the safety information that begins on page xi and “Best practices guidelines” on page 6.

2. Make sure that the second controller has the same DIMM size as controller A.

3. Install new dual-controller NVSRAM on controller A. See “Downloading controller or NVSRAM” in the System Storage DS3000 Storage Manager Installation and Support Guide for information about how to download the NVSRAM software.

Handle

Guide pin

Notch

just enough to release the handle; then, rotate the handle upward.

the bay, as shown in Figure 35.

Note: Obtain the latest dual-controller NVSRAM software from

4. Start the command-line interface; then, enter the following command to change controller A from simplex (single-controller) mode to duplex (dual-controller) mode:

Smcli ctlr_A_IP_address -c "set storageSubsystem redundancyMode=duplex;"

5. Shut down the storage subsystem, and then start it again (see “Turning on the storage subsystem” on page 44). If controller A was successfully converted to

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duplex mode, the subsystem reports an alternate controller missing error message. If the error message is not reported, reinstall the new dual-controller NVSRAM on controller A and repeat steps 4 on page 64 through 5 on page

64.

6. Unpack the new controller. Save all packing materials in case you have to return a controller.

7. Remove the controller filler panel from the controller B bay: a. On the left side of the filler panel, press the orange release tab to the right

just enough to release the handle; then, rotate the handle upward.

b. Slowly pull the handle away from the chassis to remove the filler panel

from the bay, as shown in Figure 36.

c. Place the filler panel in a safe place for future use.

8. Install the new controller.

Note: The following illustration shows installing controller A. Be sure to install

the new controller in the rightmost bay, as controller B.

Handle

Figure 36. Installing a controller

Guide pin

Notch

a. Slide the controller into the empty controller bay in the storage subsystem.

Make sure that the handle is pulled straight out as you slide the controller into the bay.

b. Make sure that the guide pins on the side of the controller fit into the

notches on the DS3300 chassis. See Figure 36.

c. After the guide pins fit into the notches and the controller fits snugly into

the bay, push the handle downward to fully latch it into place.

9. Wait up to 5 minutes for the DS3000 Storage Manager software to recognize the new controller.

10. Connect the host interface cables to the controller. See “Working with SAS cables” on page 24.

11. Make sure that all storage expansion unit connections with each other have been completed (see the dual-controller topologies in “DS3300 storage subsystem drive cabling topologies” on page 27); then, connect the SAS drive expansion cable from the right ESM in the last storage expansion unit in the chain to the drive expansion port on controller B of the DS3300.

12. Wait up to 5 to 10 minutes for the DS3000 Storage Manager software to report the drives and the redundant drive path.

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13. Verify the state of the LEDs on the newly inserted controller. See “Controller LEDs” on page 52. You can also use the DS3000 Storage Manager Subsystem Management window to identify any new faults. Do any storage subsystems have a fault (Needs Attention) status?

v Yes: Click Recovery Guru in the Subsystem Management window toolbar,

and complete the recovery procedure. If the problem remains, contact your IBM technical-support representative.

v No: Go to step 14.

14. Use the DS3000 Storage Manager software to print a new storage subsystem profile.

Replacing a controller

Use these instructions to replace a controller.

Attention: Make sure that both power-supply units are connected and powered-on and no amber LEDs are lit. Make sure that the power LEDs on both power-supply units are lit. If the status of either of the power-supply units is not Optimal, replace that power supply before you proceed with the controller replacement procedure.

To replace a controller in a DS3300, complete the following steps.

Attention:

v If you are replacing a failed controller with a replacement controller from IBM

Service, you will transfer the controller battery to the replacement controller. The replacement controller contains a 512 MB DIMM; if the capacity of the DIMM in the failed controller is larger than 512 MB, you will also transfer that DIMM to the replacement controller. Transfer the DIMM and battery exactly as described in this procedure; failure to remove and insert these items in the correct sequence can damage the DIMM.

v In a single-controller DS3300, shut down the DS3300 before you remove the

controller.

1. Read the safety information that begins on page xi and “Best practices guidelines” on page 6.

2. In a single-controller storage subsystem, shut down the storage subsystem (see “Turning off the storage subsystem” on page 54 for the correct sequence of steps); then, continue with step 4.

3. Use the DS3000 Storage Manager software to print a storage subsystem profile. Move logical drive ownership to the other controller. If the controller that you are replacing has failed but is still operating, move the failed controller to the Offline state.

Attention: Never remove a controller unless the service action allowed LED is lit. Doing so can result in a loss of data.

4. Locate the failed controller by checking the amber LEDs on the controllers in the storage subsystem.

5. Is the service action allowed LED lit?

v Yes: Go to step 6 on page 67. v No: Another component might require attention before you can remove the

controller. Use the Recovery Guru in the DS3000 Subsystem Management window to identify and correct any additional failures. If there are none, proceed with step 6 on page 67 to replace the controller.

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Attention: Static electricity can damage the storage subsystem and other electronic devices. To avoid damage, keep static-sensitive devices in their static-protective packages until you are ready to install them.

6. Unpack the new controller. Save all packing materials in case you have to return the new controller.

Attention: Handle and install I/O cables (such as SAS and Ethernet) correctly to avoid degraded performance or loss of communication with devices. When you work with I/O cables, do not pinch them, step on them, or locate them in aisles or walkways. Do not overtighten the cable straps or bend the cables to a radius smaller than 38 mm (1.5 in.).

7. Disconnect all attached interface cables from the failed controller. Be sure to label each cable so that you can reconnect it correctly to the new controller.

8. If the controller has failed in a single-controller storage subsystem, turn off the power immediately (see “Performing an emergency shutdown” on page 56 for instructions.)

9. Remove the controller from the chassis.

Handle

Figure 37. Removing and replacing a controller

Guide pin

Notch

a. On the left side of the controller, press the orange release tab to the right

just enough to release the handle; then, rotate the handle upward.

b. Slowly pull the handle away from the chassis to remove the controller from

the bay, as shown in Figure 37.

c. Place the controller on a level surface.

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10. Remove the battery from the failed controller.

Battery connector

Memory cache battery

Captive fastener

Figure 38. Removing the battery unit from the controller

a. Turn the blue captive fastener counterclockwise until the battery can move

in the direction that is indicated by the arrow.

b. Slide the battery unit out of the controller in the direction that is indicated

by the arrow.

c. Set the battery aside.

11. If the capacity of the DIMM in the controller that you removed (the “old” controller) is greater than 512 MB, complete the following steps to transfer the DIMM to the new controller:

a. Remove the 512 MB DIMM from the new controller and set it aside (see

“Replacing the memory cache DIMM” on page 86).

b. Wait 60 seconds (1 minute) to allow any residual charge to drain from the

old controller; then, remove the DIMM from the old controller.

c. Insert the DIMM into the new controller (see “Installing the DIMM” on page

88 for instructions).

12. Install the battery from step 10 into the new controller:

a. Slide the battery into the controller until the battery connector pins are

firmly seated in the controller battery connector.

b. Turn the captive fastener clockwise to secure the battery in place.

13. Install the new controller.

Attention: After you remove a controller, wait 70 seconds before you reseat or replace the controller. Failure to do so might cause unpredictable results.

a. Slide the controller into the empty controller bay in the storage subsystem.

Make sure that the handle is pulled straight out as you slide the controller into the bay.

b. Make sure that the guide pins on the side of the controller fit into the

notches on the DS3300 chassis. See Figure 37 on page 67.

c. After the guide pins fit into the notches and the controller fits snugly into

the bay, push the handle downward to fully latch it into place.

14. Connect the cables that you disconnected in step 7 on page 67.

15. (Single-controller only) Turn on the DS3300 (see “Turning on the storage

subsystem” on page 44).

16. Wait up to 5 minutes for the DS3000 Storage Manager software to recognize

the new controller.

17. Complete any remaining Recovery Guru procedures for controller replacement.

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18. Check the LEDs on the new controller to make sure that the controller is fully operational.

19. Use the DS3000 Storage Manager Subsystem Management window to check the status of all components in the storage subsystem.

v If the new controller is online and the DS3000 Storage Manager Subsystem

Management window indicates normal operation, go to step 22.

v If the new controller is online and the DS3000 Storage Manager Subsystem

Management window indicates a problem status, go to “Troubleshooting the storage subsystem” on page 48.

v If the new controller is offline, continue with step 20.

20. If the newly inserted controller is in an offline state, see the DS3000 Storage Manager online help for instructions on bringing the controller online. If necessary, open the DS3000 Storage Manager Subsystem Management window and place the controller online; select the offline controller and click Advanced → Recovery → Place controller online.

21. Verify the state of the LEDs on the newly inserted controller. See “Controller LEDs” on page 52. You can also use the DS3000 Storage Manager Subsystem Management window to identify any new faults. Do any storage subsystems have a fault (Needs Attention) status?

v Yes: Click Recovery Guru in the Subsystem Management window toolbar,

and complete the recovery procedure. If the problem remains, contact your IBM technical-support representative.

v No: Go to step 22.

22. Use the DS3000 Storage Manager software to print a new storage subsystem profile.

Working with hot-swap hard disk drives

This section explains how you can increase the storage subsystem capacity by adding more hard disk drives or by replacing existing drives with ones that have a larger capacity.

Before you begin, complete the following tasks: v Read the safety information that begins on page xi and “Handling static-sensitive

devices” on page 19.

v Make sure that the current system configuration is working correctly. v Back up all important data before you make changes to data storage devices.

Before you install or remove drives, review the following information: v Filler panels: A storage subsystem without a full set of drives (12) contains filler

panels in the unused drive bays. Before you install new drives, you must remove these filler panels. Save the filler panels for future use. For proper cooling and EMC protection, each of the 12 bays must always contain either a filler panel or a hot-swap hard disk drive.

v Drives:

– The DS3300 supports 3 Gbps SAS or SATA hard disk drives. – For optimum performance, never insert a drive into the storage subsystem

without first confirming the drive firmware level. Contact your IBM technical-support representative for information about supported drive firmware levels.

– Use of unsupported drives can cause the storage subsystem to fail.

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– After you remove a drive, wait 70 seconds before you replace or reseat the

drive to allow the drive to spin down. Failure to do so might cause unpredictable results.

Attention

v Drive labels: A label is provided on the front of each hard disk drive. Use this

label to record the location information for each drive before you remove it. Be sure to keep a record of the drives and their corresponding bays. Also, record the location information in Table 9 on page 106. If you install a drive in the wrong bay, you might lose data.

v Drive LEDs: Each drive tray has two associated LEDs, a green activity LED and

an amber status LED. These LEDs indicate the status for that drive.

Hard disk drive activity LED

Hard disk drive status LED

System Storage

Figure 39. Hard disk drive LEDs

Activity LED (green)

When this LED flashes, it indicates that there is activity to the drive.

Status LED (amber)

When this LED flashes, it indicates that the drive has been identified by the software. When this LED is lit and not flashing, it indicates that the drive has failed.

v Hot-swap hardware: The DS3300 contains hardware that enables you to

replace a failed hard disk drive without turning off the storage subsystem. You can continue to operate the DS3300 while a hard disk drive is being removed or installed. These drives are known as hot-swap hard disk drives.

Removing a hard disk drive

To remove a hot-swap hard disk drive, complete the following steps.

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Note: The hard disk drive comes installed in a drive tray. Do not attempt to detach

the drive from the tray.

1. Use Table 9 on page 106 to record the location and identify the hard disk drives.

Record this information so that you can replace the hard disk drives in the same bays from which you removed them.

2. Read the safety information that begins on page xi and “Best practices

guidelines” on page 6. Attention: Never remove a hard disk drive when its green activity LED is

flashing. Remove a drive only when its amber status LED is lit (not flashing), when the drive is inactive (activity LED is off), or when the DS3300 is turned off.

3. Remove the hard disk drive.

Hard disk drive

torage

System

Tray handle

Figure 40. Removing a drive

Drive tray

Latch

a. Press the latch on the right end of the tray handle to release it. b. Pull out the tray handle to the open position. c. Pull the drive approximately 12 mm (0.5 in.) out of the bay and wait 70

seconds to allow the drive to spin down and the storage subsystem controller to recognize that a drive is removed from the configuration.

Make sure that there is proper identification (such as a label) on the hard disk drive; then, gently slide the drive completely out of the DS3300. If the drive has failed, indicate that on the label.

4. Pull the drive out of the bay, as shown in Figure 40.

5. Place the drive horizontally on a level surface.

Attention: Handle hard disk drives gently and do not stack them. Follow all precautions for static-sensitive devices.

6. Repeat steps 3 through 5 for additional drives.

Installing a hard disk drive

Except during the DS3300 storage subsystem initial power-on, you can add hard disk drives while the storage subsystem is turned on and running. To install hot-swap hard disk drives in the storage subsystem, complete the following steps.

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Attention: After you remove a drive, wait 70 seconds to allow the drive to spin down before you replace or reseat the drive. Failure to do so might cause unpredictable results.

Note: The hard disk drive comes with a tray already attached. Do not attempt to

detach the drive from the tray.

Hard disk drive

torage S

System

Drive tray

Tray handle

Figure 41. Installing and removing a hard disk drive

1. Read the safety information that begins on page xi and “Best practices guidelines” on page 6.

2. Read the documentation that comes with the hard disk drive.

3. Remove the filler panel from the bay in which you will install the drive. Save the filler panel for later use.

4. Unpack the new drive. Save all packing material in case you have to return the drive.

5. Press the latch on the right end of the drive tray handle to release it.

6. Pull out the tray handle to the open position.

7. Gently slide the drive all the way into the empty bay until the drive stops.

8. Push the tray handle into the closed (latched) position.

9. If you are installing additional drives, wait 30 seconds, and then repeat steps 5 through 8. Make sure that you wait at least 30 seconds before you install each drive.

Replacing a hot-swap hard disk drive

Drive problems include any malfunctions that delay, interrupt, or prevent successful I/O activity between the hosts and the hard disk drives in the storage subsystem. This includes transmission problems between the host controllers and the drives. This section explains how to replace a failed hard disk drive.

Latch

Note: If you want to remove a hard disk drive that is not in a failed or bypass state,

always use the Storage Manager software either to place the drive in a failed

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state or to place the array that is associated with the drive (or drives) in an offline state before you remove the drive from the storage subsystem.

Attention: Failure to replace a hard disk drive in its correct bay might result in loss of data. If you are replacing a hard disk drive that is part of a configured array and logical drive, be sure to install the replacement hard disk drive in the correct bay. See the hardware and software documentation that comes with the DS3300 to determine whether there are restrictions regarding hard disk drive configurations.

To replace a hot-swap hard disk drive, complete the following steps:

1. Read the safety information that begins on page xi and “Best practices guidelines” on page 6.

2. Use the DS3000 Storage Manager software to print a new storage system profile.

Attention: Never hot-swap a drive when its associated green activity LED is flashing. Hot-swap a drive only when its associated amber status LED is lit and not flashing.

3. Remove the drive: a. Press the latch on the right end of the tray handle to release it. b. Pull the tray handle out into the open position. c. Pull the drive approximately 12 mm (0.5 in.) out of the bay and wait 70

seconds to allow the drive to spin down and the storage subsystem controller to recognize that a drive is removed from the configuration.

Make sure that there is identification (such as a label) on the drive, and then slide it completely out of the storage subsystem.

Attention: After you remove a drive, wait 70 seconds to allow the drive to spin down before you replace or reseat the drive. Failure to do so might cause unpredictable results.

4. Unpack the new drive. Save all packing material in case you have to return the drive.

Note: Use Table 9 on page 106 to make sure that you replace the hard disk

drive into the correct bay.

5. Install the new drive: a. Press the latch on the right end of the tray handle to release it. b. Pull out the tray handle to the open position. c. Gently slide the drive all the way into the empty bay until the drive stops. d. Push the tray handle into the closed (latched) position. e. Wait 30 seconds for the system discovery process to be completed.

6. Check the drive LEDs: v When a drive is ready for use, the green activity LED is lit and the amber

status LED is off.

v If the amber status LED is lit and is not flashing, remove the drive from the

unit and wait 70 seconds; then, install the drive again.

7. Make sure that the drive is shown in the DS3000 Storage Manager Subsystem Management window.

Note: If you are replacing more than one hard disk drive, replace only one drive at

a time.

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Replacing multiple drives

This section provides guidelines for upgrading the drives in the storage subsystem. Read the software documentation and this entire section to determine whether you should use this procedure, use a modified version of this procedure, or use a different procedure that is provided by the operating system.

Notes:

1. Instructions that are provided with the software supersede any instructions and information in this document.

2. Use Table 9 on page 106 to make sure that you replace the hard disk drives into the correct bays.

Attention: After you remove a drive, wait 70 seconds to allow the drive to spin down before you replace or reseat the drive. Failure to do so might cause unpredictable results.

There are two methods for upgrading drives:

v Replacing all the drives at the same time

This method requires that you back up the data on the affected drives and then turn off the DS3300 storage subsystem.

Attention: Turn off the DS3300 storage subsystem before you turn off the attached storage expansion enclosures.

After you replace all the drives, you must reconfigure the new drives and restore data from backup. See the procedure in “Replacing all drives at the same time” on page 75.

This is the safest way to exchange drives without losing data. However, this method might take a long time to complete because of the backup, reconfiguration, and restoration processes. In addition, other users are not able to use the storage subsystem (or any storage expansion enclosures attached to the storage subsystem) until you finish the procedure. You must use this method on RAID 0 logical drives.

v Replacing the drives one at a time

In this method, you manually fail each drive, replace it, and wait for the system to restore data to the new drive before you install the next drive. After you install the new drives, you can configure them to make the additional drive space available. See the procedure in “Replacing the drives one at a time” on page 77.

Using this method, you can replace the drives while the storage expansion enclosures and the DS3300 are running, eliminating the downtime that is required if you replace all the drives at once. However, this method is more risky because you can lose data if the drive restoration or storage subsystem reconfiguration process fails. In addition, the reconstruction process might take a long time. This method works only on redundant logical drives (RAID 1, 3, or 5). You cannot use this method with any drives that contains RAID 0 logical drives.

Consider backing up your data if you use this method. This safeguards your data if the restoration and reconfiguration process fails or the new drive malfunctions.

The method that you use depends on the following considerations: v Which method most closely matches the recommended drive upgrade procedure

that is provided in the operating-system or storage-management software documentation.

v Which RAID level is used on the affected drives (RAID 0 requires you to replace

all the drives at the same time).

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v How much downtime is acceptable as you swap the drives. v The number of drives in an array. Replacing drives one at a time is better suited

to arrays that consist of three to five drives. If you have more than 10 drives, consider replacing all drives at the same time.

v How much risk of losing data is acceptable. Because the array is in a degraded

state during the RAID array reconstruction and copyback process as result of replacing a drive in the array, any new drive failure will cause the array to fail (causing a loss of data availability and even a loss of data). The duration of the reconstruction and copyback process can be quite long, depending on the size of the RAID array.

v How extensively the data will be changed while the array is in a degraded state

during the RAID array reconstruction and copyback process as a result of replacing a drive in the array. The more extensive the data changes are, the more work that will have to be performed to restore the data in the event that the array fails because an additional drive fails while the array is in a degraded state.

Replacing all drives at the same time

Use this procedure to replace all drives at the same time. You must use this method if you are upgrading drives that contain RAID 0 logical drives. All the data that is currently on the drives is lost when you replace the drives; therefore, you must back up all data that is currently on the drives. This procedure also requires you to turn off the storage expansion enclosures and the DS3300, which makes the storage subsystem (and any attached storage expansion enclosures) inaccessible to other users.

Attention: After you remove a drive, wait 70 seconds to allow the drive to spin down before you replace or reseat the drive. Failure to do so might cause unpredictable results.

To replace all the drives at the same time, complete the following steps:

1. Read the following information: v The information in “Replacing multiple drives” on page 74, particularly the

paragraphs that explain the differences between the two possible upgrade procedures

v The information in the software documentation about drive upgrades and

installation

v The documentation that comes with the new drives

Read all precautionary notes, kit instructions, and other information. Kit instructions often contain the most current information about the drives and their installation, plus upgrade or servicing procedures. Compare the kit instructions with this procedure to determine whether you must modify this procedure.

2. Use the DS3000 Storage Manager software to check the status of the DS3300. Correct any problems that are reported.

3. Perform a complete backup of the drives that you are replacing. You need the backup to restore data on the drives later in this procedure. Attention: When you handle static-sensitive devices, take precautions to

avoid damage from static electricity. For details about handling static-sensitive devices, see “Handling static-sensitive devices” on page 19.

4. Unpack the new drives. Set the drives on a dry, level surface away from magnetic fields. Save the

packing material and documentation in case you have to return the drives.

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5. Complete the following steps: a. Stop all I/O activity to the storage subsystem and attached storage

expansion enclosures.

b. Make sure that all of the green drive activity LEDs on the front of the

storage subsystem (and on all attached storage expansion enclosures) are not flashing.

c. Make sure that the green cache active LEDs are off. See “Controller LEDs”

on page 52 for the location of the cache active LEDs.

d. If applicable, use the operating-system software to disconnect the storage

subsystem logical drives from the host before you power-off the storage subsystem.

Attention: To turn off all power to the storage subsystem, you must turn off both power-supply switches and disconnect both power cords. Use the procedure in step 6 for the correct shutdown sequence.

6. Turn off the power to each device according to the following shutdown sequence:

a. Turn off power to the host before you turn off power to the storage

subsystem. If the host must stay powered-on to support a network, see the operating-system documentation for information about disconnecting the storage subsystem logical drives from the host before the storage subsystem is powered-off.

b. Turn off power to the storage subsystem before you turn off power to the

storage expansion enclosures. Turn off both power-supply switches on the rear of the storage subsystem.

c. Turn off power to other supporting devices (for example, management

stations or Ethernet switches).

7. Use the procedures in “Replacing a hot-swap hard disk drive” on page 72 to remove the drives that you want to replace. Use the procedures in “Installing a hard disk drive” on page 71 to install the new drives in the storage subsystem.

8. After you install all the new drives, check the system documentation for the hardware devices that you intend to power-on, and then determine the correct startup sequence. Use the following power-on sequence, where applicable:

a. Turn on the power to the supporting devices (for example, Ethernet

switches and management stations) before you turn on power to the storage subsystem.

b. Turn on the storage expansion enclosures before the storage subsystem.

The controllers might not recognize the correct configuration if the drives are powered-on after the storage subsystem. For instructions for powering-on the storage subsystem, see the storage subsystem documentation.

c. Turn on the power to the storage subsystem; then, restart or turn on the

power to the host.

9. Turn on the power to each device, according to the power-on sequence in step

8. To turn on power to the storage subsystem and the storage expansion enclosures, turn on the power-supply switches on the rear of the storage subsystem. You must turn on both power-supply switches to take advantage of the redundant power supplies.

10. Check the green drive activity LEDs and the amber drive fault LEDs above the new drives.

Make sure that the drive activity LEDs are lit and the drive fault LEDs are off.

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Note: The drive fault LEDs might flash intermittently while the drives spin up.

v If a drive activity LED is off, the drive might not be installed correctly.

Remove the drive, wait 70 seconds, and then reinstall it.

v If the drive fault LED stays lit or the drive activity LED stays off, the new

drive might be faulty. See the DS3000 Storage Manager software for problem determination.

11. Use the DS3000 Storage Manager software to configure the new drives. See the DS3000 Storage Manager software online help for detailed instructions.

12. Restore the data from backup to all the drives.

Replacing the drives one at a time

Use this procedure to replace all the drives one at a time. You cannot use this procedure on RAID 0 logical drives (use the procedure in “Replacing all drives at the same time” on page 75).

Note: If hot spares are assigned in the storage subsystem, you might want to

unassign the hot spares while you perform this procedure. If you do not, reconstruction might start on the hot spare before you insert the new drive. The data on the new drive is still rebuilt, but the process takes longer for each drive. Remember to reassign the hot spares when you are finished with this procedure.

Attention: After you remove a drive, wait 70 seconds to allow the drive to spin down before you replace or reseat the drive. Failure to do so might cause unpredictable results.

To replace the drives one at a time, complete the following steps:

1. Read the following information: v “Replacing multiple drives” on page 74, particularly the paragraphs that

explain the differences between the two possible upgrade procedures

v Your software documentation about drive upgrades and installation v The documentation that comes with the new drives

2. Use the DS3000 Storage Manager software to check the status of the unit. Correct any problems that are reported.

3. Back up the data in the arrays and logical drives that are configured, using the drives that you are replacing.

Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity. For details about handling static-sensitive devices, see “Handling static-sensitive devices” on page 19.

4. Unpack the new drives. Set the drives on a dry, level surface away from magnetic fields. Save the

packing material and documentation in case you have to return the drives.

5. Use the DS3000 Storage Manager software to make sure that the array that was defined using these drives is in Optimal (not Degraded) state before you manually fail the first drive that you want to replace. If the array is in a Degraded state, use the recovery procedures to bring the array into the optimal state.

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Make sure that:

v You fail only one drive v The software status display shows a Failed status for the applicable drive v The amber drive fault LED (on the front bezel below the drive) is lit

Attention: Removing the wrong drive can cause data loss. Make sure that you remove only the failed drive. A lit drive fault LED indicates the failed drive.

If you remove an active drive accidentally, wait at least 70 seconds and then reinstall it. Because you have failed two drives in a RAID array, the array might be marked as failed by the controller. This array will not be available to the host for I/O. See the DS3000 Storage Manager software for further recovery instructions. Do not attempt to replace any drives until the array is brought back to Optimal state.

6. Use the procedures in “Replacing a hot-swap hard disk drive” on page 72 to remove the failed drive. Use the procedures in “Installing a hard disk drive” on page 71 to install the new drives in the storage subsystem.

The new drive automatically reconstructs the data after you install it in the drive bay.

During data reconstruction, the amber drive fault LED might be lit for a few minutes and then turn off when the green drive activity LED begins flashing. A flashing drive activity LED indicates that data reconstruction is in progress.

Note: If the storage subsystem has active hot spares, data might not start

copying to the new drive until the data is reconstructed on the hot spare. This increases the time that is required to complete the procedure.

7. Check the green drive activity LED and the amber drive fault LED on each of the new drives.

Make sure that the drive activity LEDs are lit and the drive fault LEDs are off.

Note: The drive fault LEDs might flash intermittently while the drives spin up. v If the drive activity LED is off, the drive might not be installed correctly.

Remove the drive, wait 70 seconds, and then reinstall it.

v If the drive fault LED stays lit or the drive activity LED stays off, the new

drive might be faulty or might be an uncertified drive. Use the DS3000 Storage Manager software for problem determination. In the case of an uncertified drive, make sure that the drive options or drive FRU part number is correct for the storage subsystem.

8. Use the DS3000 Storage Manager software to monitor the status of the new drive and the progress of the data reconstruction. Wait for data reconstruction to finish (the drive activity LED stops flashing).

Note: The drive activity LED continues to flash after reconstruction is finished

if there is I/O activity to that drive. In that case, use the host software to determine whether the data reconstruction is finished.

9. When reconstruction is finished on the new drive, repeat step 5 on page 77 through step 8 for each additional drive that you want to install.

10. Use the DS3000 Storage Manager software to configure the additional space on the new drives.

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Replacing a power supply

(L003)

The power-supply unit is a component that includes a 530-watt power supply and two fans. The power-supply units provide power and cooling for the DS3300. The power-supply units circulate air from the front to the rear of the storage subsystem.

The power-supply units are customer replaceable units (CRUs) and do not require preventive maintenance. Use only the supported power-supply units for the specific storage subsystem.

Each power supply has a built-in sensor that detects the following conditions:

v Over-voltage v Over-current v Overheated power supply

If any of these conditions occurs, one or both power supplies will shut down. If the power remains off (does not automatically restart), make sure that the environment is optimal (no overheating has occurred, all electrical receptacles are working, and so on). For more information, see “Restoring power after an unexpected shutdown” on page 56.

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If both power supplies fail or if the power supplies cannot maintain an internal temperature below 70°C (158°F), the power supplies in the storage subsystem will automatically shut down (an overtemperature condition). If this occurs, you must cool the storage subsystem and restart it. See “Restoring power after an unexpected shutdown” on page 56.

Attention: The fans in the power-supply units draw in fresh air and force out hot air. The power-supply units are hot-swappable and redundant; however, if the fans in one power-supply unit fail, you must replace the entire failed power-supply unit within 72 hours to maintain redundancy and optimum cooling. Do not remove the failed power-supply unit until you have the replacement power-supply unit. When you do remove the failed power-supply unit, be sure to install the second power-supply unit within 10 minutes to prevent any overheating due to the interruption to the air flow that cools the storage subsystem.

Do not run the storage subsystem without adequate ventilation and cooling, because it might cause damage to the internal components and circuitry.

To replace a power-supply unit, complete the following steps. Figure 42 on page 83 illustrates removing and inserting a unit.

Attention: To prevent damage to the storage subsystem components from overheating, replace a failed power-supply unit within 10 minutes of removal. If replacing it will take longer than 10 minutes, stop all I/O activity to the storage subsystem and turn off the power until you complete the replacement.

(L001)

1. If necessary, use the DS3000 Storage Manager software to print a storage system profile.

2. Read the safety information that begins on page xi and “Best practices guidelines” on page 6.

3. Did the Recovery Guru direct you to replace a failed power supply?

v Yes: Go to step 4. v No: Run the Recovery Guru to identify the failed component, and then go to

step 4.

4. Unpack the new power-supply unit. Save all packing material in case you have to return the failed power-supply unit.

Note: The new power-supply unit comes with an instruction sheet and label

sheet. The instruction sheet provides instructions for placing the correct labels on the power supply to mark the LEDs correctly. The label sheet contains the peel-off labels that you actually place on the power supply.

5. Using the information on the instruction sheet, place the labels on the power supply to correctly mark the LEDs.

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6. Turn off the power switch on the new unit.

7. Check the fault LED to locate the failed power supply. If a fault is detected, the amber fault LED is lit.

8. Make sure that the service action allowed LED is lit. Do not remove the power supply if the LED is off. For more information about the service action allowed LED, see “Service action allowed LED” on page 63.

Chapter 5. Replacing components 81

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DANGER

When working on or around the system, observe the following precautions:

Electrical voltage and current from power, telephone, and communication cables are hazardous. To avoid a shock hazard:

v Connect power to this unit only with the provided power cord. Do

not use the provided power cord for any other product.

v Do not open or service any power supply assembly. v Do not connect or disconnect any cables or perform installation,

maintenance, or reconfiguration of this product during an electrical storm.

v The product might be equipped with multiple power cords. To

remove all hazardous voltages, disconnect all power cords.

v Connect all power cords to a properly wired and grounded electrical

outlet. Ensure that the outlet supplies proper voltage and phase rotation according to the system rating plate.

v Connect any equipment that will be attached to this product to

properly wired outlets.

v When possible, use one hand only to connect or disconnect signal

cables.

v Never turn on any equipment when there is evidence of fire, water,

or structural damage.

v Disconnect the attached power cords, telecommunications systems,

networks, and modems before you open the device covers, unless instructed otherwise in the installation and configuration procedures.

v Connect and disconnect cables as described in the following

procedures when installing, moving, or opening covers on this product or attached devices.

To disconnect: a. Turn off everything (unless instructed otherwise). b. Remove the power cords from the outlets. c. Remove the signal cables from the connectors. d. Remove all cables from the devices. To connect: a. Turn off everything (unless instructed otherwise). b. Attach all cables to the devices. c. Attach the signal cables to the connectors. d. Attach the power cords to the outlets. e. Turn on the devices. (D005a)

9. Turn off the power switch and disconnect the power cord from the failed power supply.

82 System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide