RAID Array 3000 Controller Shelf
Hardware User’s Guide
EK–SMCPQ–UG. C01
Compaq Computer Corporation
Houston, Texas
While Compaq Computer Corporation believes the information included in this manual is correct as of the date of publication, it is subject to change without notice. Compaq makes no representations that the interconnection of its products in the manner described in this document will not infringe existing or future patent rights, nor do the descriptions contained in this document imply the granting of licenses to make, use, or sell equipment or software in accordance with the description. No responsibility is assumed for the use or reliability of firmware on equipment not supplied by Compaq or its affiliated companies. Possession, use, or copying of the software or firmware described in this documentation is authorized only pursuant to a valid written license from Compaq, an authorized sublicensor, or the identified licensor.
Commercial Computer Software, Computer Software Documentation and Technical Data for Commercial Items are licensed to the U.S. Government with Compaq’s standard commercial license and, when applicable, the rights in DFAR 252.227 7015, “Technical Data-Commercial Items.”
© 1999 Compaq Computer Corporation. All rights reserved. Printed in U.S.A.
Compaq, the Compaq logo, DIGITAL, DIGITAL UNIX, DECconnect, HSZ, HSG, StorageWorks, VMS, OpenVMS Registered in the United States Patent and Trademark Office.
UNIX is a registered trademark in the United States and other countries exclusively through X/Open Company Ltd. Windows NT is a registered trademark of the Microsoft Corporation. Sun is a registered trademark of Sun Microsystems, Inc. Hewlett-Packard, TACHYON, and HP-UX are registered trademarks of the Hewlett-Packard Company. IBM and AIX are registered trademarks of International Business Machines Corporation. All other trademarks and registered trademarks are the property of their respective owners.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the manuals, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Restrictions apply to the use of the local-connection port on this series of controllers; failure to observe these restrictions may result in harmful interference. Always disconnect this port as soon as possible after completing the setup operation. Any changes or modifications made to this equipment may void the user's authority to operate the equipment.
Warning!
This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
Achtung!
Dieses ist ein Gerät der Funkstörgrenzwertklasse A. In Wohnbereichen können bei Betrieb dieses Gerätes Rundfunkstörungen auftreten, in welchen Fällen der Benutzer für entsprechende Gegenmaßnahmen verantwortlich ist.
Attention!
Ceci est un produit de Classe A. Dans un environnement domestique, ce produit risque de créer des interférences radioélectriques, il appartiendra alors à l’utilisateur de prendre les mesures spécifiques appropriées.
JAPAN
USA
This equipment generates, uses, and may emit radio frequency energy. The equipment has been type tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC rules, which are designed to provide reasonable protection against such radio frequency interference. Operation of this equipment in a residential area may cause interference in which case the user at his own expense will be required to take whatever measures may be required to correct the interference. Any modifications to this device - unless expressly approved by the manufacturer - can void the user’s authority to operate this equipment under part 15 of the FCC rules.
Contents
Revision Record ............................................................................................................................ |
vii |
||
About This Guide .......................................................................................................................... |
ix |
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1 |
Product Overview |
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1.1 |
Product Description ........................................................................................................... |
1–1 |
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1.2 |
Shelf Features ..................................................................................................................... |
1–5 |
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1.3 |
Controller Shelf Enclosure ................................................................................................ |
1– 5 |
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1.4 |
Shelf Cabinet Installation .................................................................................................. |
1–7 |
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1.5 |
Shelf Major Components................................................................................................... |
1–7 |
|
1.5.1 |
RAID Array Controller ............................................................................................... |
1–7 |
|
1.5.2 |
Device I/O Module ...................................................................................................... |
1–8 |
|
1.5.3 |
Host I/O Module ....................................................................................................... |
1–10 |
|
1.5.4 |
Shelf Cooling ............................................................................................................ |
1–12 |
|
1.5.5 |
Controller Shelf Power Supplies............................................................................. |
1–12 |
|
1.5.6 |
Uninterruptable Power Supply (UPS)..................................................................... |
1–13 |
|
1.6 |
6-Slot Device Expansion Shelf (Optional) ................................................................... |
1–14 |
|
1.7 |
Connecting the RAID Array 3000 Controller Shelf to a Host System....................... |
1–14 |
|
1.8 |
Specifications .................................................................................................................. |
1–19 |
2 |
RAID Array Controller |
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2.1 |
Controller Overview .......................................................................................................... |
2–1 |
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2.2 |
Controller Features............................................................................................................. |
2–3 |
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2.3 |
Controller Reset and LED Indicators ............................................................................... |
2–5 |
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2.4 |
Flexible RAID Set Configuration ..................................................................................... |
2–6 |
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2.5 |
Performance Enhancements .............................................................................................. |
2–7 |
|
2.5.1 |
Custom Components ................................................................................................... |
2–7 |
|
2.5.2 |
Efficient Write and Read Algorithms........................................................................ |
2–7 |
|
2.6 |
RAID Levels Supported..................................................................................................... |
2–8 |
|
2.6.1 |
RAID 0.......................................................................................................................... |
2–9 |
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2.6.2 |
RAID 1....................................................................................................................... |
2–11 |
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RAID Array 3000 Controller Shelf
2 RAID Array Controller (continued)
|
2.6.3 |
RAID 0+1................................................................................................................... |
2–11 |
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2.6.4 |
RAID 4 ....................................................................................................................... |
2–13 |
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|
2.6.5 |
RAID 5 ....................................................................................................................... |
2–14 |
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2.6.6 |
JBOD .......................................................................................................................... |
2–16 |
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2.7 |
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System Parameters........................................................................................................... |
2–16 |
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2.8 |
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Redundant Operation....................................................................................................... |
2–16 |
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2.8.1 |
Initialization............................................................................................................... |
2–17 |
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2.8.2 |
Message Passing........................................................................................................ |
2–1 7 |
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2.8.3 |
Failover ...................................................................................................................... |
2–17 |
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2.9 |
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Environmental .................................................................................................................. |
2–18 |
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2.9.1 |
Backup Power Management..................................................................................... |
2–18 |
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3 |
Installation and Maintenance |
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||
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3.1 |
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Installation Guidelines ...................................................................................................... |
3–1 |
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3.2 |
Installing Shelves in the Cabinet ...................................................................................... |
3–2 |
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3.2.1 |
Installing Shelf Supports ............................................................................................ |
3–7 |
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3.2.2 |
Installing UPS Brackets.............................................................................................. |
3–9 |
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3.3 |
Power and SCSI Cable Connection Procedures ............................................................ |
3–13 |
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3.3.1 |
SCSI Bus Target Addresses and Termination ........................................................ |
3–14 |
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3.3.2 |
Cabling a Single Device Expansion Shelf Subsystem ........................................... |
3–15 |
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3.3.3 |
Cabling a Two Device Expansion Shelf Subsystem .............................................. |
3–18 |
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3.3.4 |
Cabling a Three Device Expansion Shelf Subsystem ............................................ |
3–21 |
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3.3.5 |
Cabling a Four Device Expansion Shelf Subsystem .............................................. |
3–24 |
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3.4 |
Controller Shelf Status LEDs ......................................................................................... |
3–27 |
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3.5 |
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Controller LEDs............................................................................................................... |
3–28 |
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3.6 |
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Replacing Components (FRU’s) .................................................................................... |
3–28 |
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3.6.1 |
Replacing a Host or Device I/O SBB ...................................................................... |
3–30 |
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3.6.2 |
Replacing a Power Supply SBB............................................................................... |
3–31 |
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3.6.3 |
Replacing the RAID Controller ............................................................................... |
3–32 |
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3.6.4 |
Replacing the UPS .................................................................................................... |
3–33 |
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|
3.6.5 |
Replacing a Blower ................................................................................................... |
3–33 |
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|
3.6.6 |
Replacing the Controller Memory Cache Modules ............................................... |
3–35 |
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4 |
Second Controller Option |
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||
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4.1 |
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Introduction ........................................................................................................................ |
4–1 |
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4.2 |
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Install Firmware Upgrade ................................................................................................. |
4–2 |
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4.2.2 |
Save Existing Configuration ...................................................................................... |
4–3 |
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4.2.3 |
Install Two SIMMs ..................................................................................................... |
4–5 |
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4.3 |
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Install New Controller ....................................................................................................... |
4–6 |
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4.3.1 |
Restoring Configuration ............................................................................................. |
4–7 |
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4.4 |
Configuring a Dual Controller Installation for a Single Serial Port.............................. |
4–9 |
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EK–SMCPQ–UG. C01 |
Contents
Figures
1–1 |
RAID Array 3000 Controller Shelf .................................................................................. |
1–2 |
1–2 |
RAID Array 3000 6-Slot Device Expansion Shelf .......................................................... |
1–3 |
1–3 |
Controller Shelf Major Components ................................................................................ |
1–6 |
1–4 |
RAID Array Controller ...................................................................................................... |
1 –7 |
1–5 |
Device I/O Module ............................................................................................................. |
1–9 |
1–6 |
Device I/O Module Blower Status LEDs ...................................................................... |
1–10 |
1–7 |
Host I/O Module .............................................................................................................. |
1–11 |
1–8 |
Power Supply ................................................................................................................... |
1–13 |
1–9 |
Single Host, Single Adapter, with One Active Controller........................................... |
1–15 |
1–10 |
Single Host, Single Adapter, with Two Active Controllers ........................................ |
1–16 |
1–11 |
Single Host, Dual Adapter, Two Ports, with Two Active Controller ......................... |
1–17 |
1–12 |
Dual Host, Single Adapter, with One Active Controller per Host .............................. |
1–18 |
2–1 |
RAID Array 3000 Single Controller Block Diagram ...................................................... |
2–2 |
2–2 |
Bridging the Gap Between the Host and the Device Expansion Shelf .......................... |
2–3 |
2–3 |
Logical Units Created from Storagesets, Partitions, and Disk Drives .......................... |
2–4 |
2–4 |
Controller Front Panel ...................................................................................................... |
.2–6 |
2–5 |
RAID 0 Write ................................................................................................................ .. |
2–10 |
2–6 |
Diagram of a RAID 1 Write ........................................................................................... |
2–11 |
2–7 |
Diagram of a RAID 0+1 Write....................................................................................... |
2–12 |
2–8 |
Diagram of a RAID 4 Write ........................................................................................... |
2–13 |
2–9 |
Diagram of a RAID 5 Write ........................................................................................... |
2–15 |
3–1 |
Recommended Single Expansion Shelf Installation ...................................................... |
3–3 |
3–2 |
Recommended Controller Shelf Installation (Two Expansion Shelves)....................... |
3–4 |
3–3 |
Recommended Controller Shelf Installation (Three Expansion Shelves) .................... |
3–5 |
3–4 |
Recommended Controller Shelf Installation (Four Expansion Shelves) ...................... |
3–6 |
3–5 |
RETMA Cabinet Shelf Supports ....................................................................................... |
3–9 |
3–6 |
UPS Rack-mount Bracket Assemblies .......................................................................... |
3–11 |
3–7 |
UPS Bracket RETMA and Metric Hole Locations (Front) ......................................... |
3–11 |
3–8 |
UPS Bracket RETMA and Metric Mounting Hole Locations (Rear)......................... |
3–12 |
3–9 |
Controller/Single Device Expansion Shelf Cabling Diagram..................................... |
3–16 |
3–10 |
AC Power Wiring Diagram ............................................................................................ |
3–17 |
3–11 |
Controller/Two Device Expansion Shelf Cabling Diagram ........................................ |
3–19 |
3–12 |
Controller/Three Device Expansion Shelf Cabling Diagram ...................................... |
3–22 |
3–13 |
Controller/Four Device Expansion Shelf Cabling Diagram ........................................ |
3–25 |
3–14 |
Shelf Status LEDs ........................................................................................................... |
3–27 |
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vii |
RAID Array 3000 Controller Shelf
Figures (continued)
3–15 |
Controller Shelf Field Replaceable Units ...................................................................... |
3–29 |
3–16 |
Replacing the Host I/O SBB ........................................................................................... |
3–30 |
3–17 |
Removing the Controller from the Shelf ....................................................................... |
3–32 |
3–18 |
Replacing a Blower Assembly ........................................................................................ |
3–34 |
3–19 |
Controller Cache Modules .............................................................................................. |
3–36 |
3–20 |
Release Locking Clips ..................................................................................................... |
3–36 |
3–21 |
Remove Installed SIMM Modules ................................................................................. |
3–37 |
3–22 Install Replacement Modules ......................................................................................... |
3–38 |
|
3–23 Pivot Module Down to Secure ........................................................................................ |
3–38 |
|
4–1 |
Update Firmware Command............................................................................................. |
4–2 |
4–2 |
Firmware Update Dialog Box........................................................................................... |
4–3 |
4–3 |
Saving the Existing Configuration ................................................................................... |
4–4 |
4–4 |
Saved Configuration ......................................................................................................... |
.4–4 |
4–5 |
Insert Module into SIMM Connector ............................................................................... |
4–5 |
4–6 |
Pivot Module Down to Seat .............................................................................................. |
4–5 |
4–7 |
Remove Controller from Top Slot.................................................................................... |
4–6 |
4–8 |
Restoring Configuration to New Controller .................................................................... |
4–7 |
4–9 |
Restored Configuration Example ..................................................................................... |
4–8 |
Tables
1–1 RAID Array 3000 Part Numbers and Model Descriptions |
............................................1–4 |
|
1–2 Controller Shelf Technical Specifications..................................................................... |
1–15 |
|
1–3 Controller Shelf Power and Physical Specifications .................................................... |
1–17 |
|
2–1 |
LED/Reset Switch Interface ............................................................................................. |
2–5 |
2–2 |
RAID Levels Supported .................................................................................................... |
2–8 |
2–3 Shelf RAID Set Restrictions ............................................................................................. |
2–9 |
|
2–4 |
RAID 0+1 Example ......................................................................................................... |
2–1 2 |
2–5 Response to Various AC Power Cond itions .................................................................. |
2–18 |
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3–1 Shelf Support Mounting Kits and Installation Guides ................................................... |
3–7 |
|
3–2 RETMA Cabinet Shelf Support Parts List ....................................................................... |
3–7 |
|
3–3 UPS Rack-mount Bracket Mounting Hardware List .................................................... |
3–10 |
|
3–4 Controller Shelf Field Replaceable Units ...................................................................... |
3–29 |
viii |
EK–SMCPQ–UG. C01 |
Revision Record
This Revision Record provides a concise publication history of this guide. It lists the revision levels, release dates, and reasons for the revisions.
The following revision history lists all revisions of this publication and their effective dates. The publication part number is included in the Revision Level column, with the last entry denoting the latest revision. This publication supports the StorageWorks RAID Array 3000 Controller Shelf.
Revision Level |
Date |
Summary of Changes |
EK–SMCPQ–UG. A01 |
May 1998 |
Original release. |
EK–SMCPQ–UG. B01 |
July 1998 |
Adds RETMA cabinet |
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|
shelf support installation |
|
|
procedures. |
EK–SMCPQ–UG. C01 |
July 1999 |
Adds Shelf-to-Host |
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|
connection diagrams to |
|
|
Chapter 1 and dual |
|
|
controller configuration |
|
|
procedure to Chapter 4. |
EK–SMCPQ–UG. C01 |
ix |
About This Guide
This section identifies the audience of this guide and describes the contents (chapter-by- chapter) and structure. In addition, this section includes a list of associated documents and the conventions used in this guide.
Intended Audience
This guide is intended for installers and operators of the RAID Array 3000 Controller Shelf. Installing the shelf requires a general understanding of basic SCSI terminology and product installation procedures.
Document Structure
This guide contains the following chapters:
Chapter 1: Product Overview
Product Overview provides an overview and a physical hardware description of the RAID Array 3000 controller shelf. It includes the major features, a brief description of the major components, a series of controller shelf-to-host connection diagrams, and the specifications for the shelf.
Chapter 2: RAID Array Controller
RAID Array Controller describes the major features and characteristics of the controller in the RAID Array 3000. It also lists the RAID levels supported by the subsystem and a brief description of each level. Redundant operation and environmental considerations (i.e. backup power management, voltages, and temperature) are covered at the end of the chapter.
Chapter 3: Installation and Maintenance
Installation and Maintenance recommends how to install the controller and device expansion shelves in a rackmount RETMA or metric cabinet. The information covers both single and multiple device expansion shelf installations. The chapter also describes how to interpret the status and power LEDs on the front panel, how to replace a Field Replaceable Unit (FRU), and how to add or replace a SIMM module in the RAID controller.
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RAID Array 3000 Controller Shelf
Chapter 4: Second Controller Option
Second Controller Option describes how to install a second (redundant) RAID controller in the shelf for redundancy. It also contains a dual controller installation procedure for a single serial port.
Associated Documents
In addition to this guide, refer to the following documentation to properly install and setup your specific subsystem configuration:
Table 1 Associated Documents
Document Title
StorageWorks RAID Array 3000 Configuration and
Maintenance Guide
7 Device, 16-Bit SBB Shelf (BA356-S Series) User’s Guide
StorageWorks SBB Shelf I/O Modules User’s Guide
RAID Array 3000 Getting Started for Windows NT-Intel Installation Guide
RAID Array 3000 Getting Started for Windows NT-Alpha Installation Guide
RAID Array 3000 Storage Subsystem Second Controller
Option Installation Guide
Command Console 2.1 for RAID Array 3000, User’s Guide
RETMA Shelf Rail Kit Installation Guide
RETMA Bracket Installation Guide
Order Number
EK–SMCS2–UG
EK-BA356-UG
EK-SBBIO-UG
AA-RACZA-TE
AA-RACUA-TE
EK-SM3KC-IG
AA-RBF2B-TE
EK-35XRB-IG
ER-PCBAR-AA
xii |
EK–SMCPQ–UG. C01 |
About This Guide
Conventions
This guide uses the following documentation conventions:
Table 2 Style Conventions
Style
plain monospace type
boldface type
italic type
Meaning
Text
For the first instance of terms being defined in text, or both.
For emphasis, manual titles, chapter summaries, keyboard key names.
Table 3 Nomenclature Convention
RAID Advisory Board Description
RAID 0
RAID 1
RAID 0+1
RAID 4
RAID 5
RAID Array 3000 Usage
STRIPset
MIRRORset
STRIPED MIRRORset
STRIPED with a Fixed parity drive
STRIPED with a Floating parity drive
EK–SMCPQ–UG. C01 |
xiii |
RAID Array 3000 Controller Shelf
Support and Services
Who to contact in the Americas
Information and Product Questions: Local Sales Office / StorageWorks Hotline
|
1-800-786-7967 |
Installation Support: |
Contact the COMPAQ Distributor where the |
|
Storage Solution was Purchased / Local |
|
Compaq Sales Office. |
Multivendor Customer Service (MCS):
Installation Contact the Compaq Customer Support Center
(CSC).
Warranty |
Contact the Compaq Customer Support Center |
|
(CSC) for warranty service after solution is |
|
installed and operating. |
Remedial |
Contact the Compaq Customer Support Center |
|
(CSC) Note: A Service Contract is |
|
recommended when the equipment is out of |
|
warranty. Contact the local Compaq Sales |
|
Office. Customer Support Center (CSC) |
|
1 800-354-9000 |
|
|
Who to contact in Europe
Information and Product Questions: |
Contact the Compaq Distributor or reseller |
Installation Support and Installation: |
Contact the Compaq Distributor or reseller from |
|
whom the Storage Solution was purchased. |
For Warranty Service |
See the Warranty Card packaged with the |
|
product. |
For Remedial Service |
Contact the Compaq Distributor or reseller from |
|
whom the Storage Solution was purchased. |
|
Note: A Service Contract is recommended |
|
when the equipment is out of warranty. |
|
|
Who to contact in Asia Pacific
For all services, contact the Compaq Distributor or reseller from whom the equipment was purchased
xiv |
EK–SMCPQ–UG. C01 |
1
Product Overview
This chapter provides an overall description of the RAID Array 3000 Controller Shelf and its components. A series of cabling diagrams showing how to connect the Controller Shelf to a host system and a list of technical and environmental specifications is also included at the end of the chapter.
NOTE
This guide is the Hardware User’s Guide. For configuration information, refer to the Getting Started RAID Array 3000 for Windows NT – Intel Installation Guide and the StorageWorks Command Console (SWCC) 2.1 User’s Guide.
1.1Product Description
The RAID Array 3000 Controller Shelf (Figure 1–1) is a rackmount storage system containing the basic components required to manage a storage array with two 16-bit, differential, UltraSCSI bus host interfaces. The devices, referred to as StorageWorks Building Blocks or SBBs, are disk drives from the StorageWorks family of storage devices. The release note that accompanies the storage system lists the software solutions and disk drives that are supported.
The Controller Shelf is connected to one or multiple (up to four) 6-slot Device Expansion Shelves (shown in Figure 1–2) to form the complete RAID Array 3000 storage system. The expansion shelf is offered as an option with a minimum of one shelf required. It contains six SBB slots for the disk drives, two power supplies, and a personality I/O module that connects the SCSI interface with the controller shelf. The Device Expansion Shelf is supported by its own user’s guide (Part No.: EK–BA356–UG ) which must be used in conjunction with this document to properly install and configure your storage system.
EK–SMCPQ–UG. C01 |
1–1 |
RAID Array 3000 Controller Shelf
NOTE
The Device Expansion Shelf (DS-SWXRA-GN) must have a revision level of B01 (or higher) to operate with the RAID Array 3000 Controller Shelf. Also, the Personality I/O module supplied with the shelf (part no. 70-33067-02) must have a minimum revision level of H01 or higher.
The Controller Shelf and the accompanying Device Expansion Shelves are installed in a standard RETMA or metric rackmount cabinet design. The Device Expansion Shelves are typically mounted directly above the Controller Shelf in the cabinet. Each shelf is supplied with a bracket mounting kit to secure the unit into the desired cabinet design. The bracket kit for a metric cabinet is optional and must be ordered separately.
Figure 1–1 RAID Array 3000 Controller Shelf
SHR-1034
1–2 |
EK–SMCPQ–UG. C01 |
Chapter 1. Product Overview
Figure 1–2 RAID Array 3000 6-Slot Device Expansion Shelf (Optional)
SHR-1091
A battery-backup subsystem is included with the Controller Shelf in the form of a rackmount UPS (Uninterruptable Power Supply). In case of a power failure, the UPS provides temporary power to the storage system while it flushes its cache contents to disks. The UPS is normally installed in the lowest available slot in the cabinet.
CAUTION
The UPS is sized to perform this function for the Controller and Device Expansion Shelves only. No other electrical devices should be plugged into the UPS.
As an option, a second RAID controller module can be added for redundancy. The second controller operates in conjunction with the installed controller to protect data in case of a malfunction in the primary unit. The optional controller is installed directly below the primary controller in the center of the shelf.
The RAID Array 3000 Controller Shelf enclosure and its associated options are listed and described in Table 1–1.
EK–SMCPQ–UG. C01 |
1–3 |
RAID Array 3000 Controller Shelf
Table 1–1 Controller Shelf Part Numbers and Model Descriptions
DIGITAL Part No.
DS-SWXRA-GH
DS-SWXRA-GK
DS-SWXRA-GN
DS-HSZ22-AA
Item Description
RA3000 UltraSCSI Rackmount Controller/Shelf with one controller, 120 V, which Includes:
One BA356 type shelf
One HSZ22 RAID controller with 16 MB of cache
Two 180 Watt power supply SBBs, two dual-port, differential, Ultra Wide, Host I/O modules
One dual-channel, wide, single-ended device I/O module One 1000 Watt UPS with rackmount bracket
One five meter host SCSI cable Two 9-pin serial controller cables Two Trilink SCSI cable adapters One gray C13-to-125 V power cord One black C13-to-125 V power cord One Controller Shelf rackmount kit User documentation.
Requires: Solutions Software Kit for platform, host adapter, and disks.
Options: Second HSZ22-AA controller and cache memory upgrade.
RA3000 UltraSCSI Rackmount Controller/Shelf with one controller, 230 V, which includes:
Except for power cord (DS-SWXRA-GK includes one black C13-to-230 V), same as DS-SWXRA-GH above.
RA3000 UltraSCSI Rackmount 6-Slot Storage Expansion Shelf which includes:
16-bit shelf assembly, two 180 Watt power supply SBBs, 16-bit Personality I/O assembly, shelf rack mounting kit, power cords, user documentation.
RA3000 Second Controller Option which includes: DS-HSZ22-AA SCSI controller, three 16-MB SIMM modules, 0.8 m adapter-to-SCSI-3 cable, 5 m SCSI cable, 9- pin serial cable, user documentation
1–4 |
EK–SMCPQ–UG. C01 |
Chapter 1. Product Overview
1.2Shelf Features
The RAID 3000 Controller Shelf is equipped with a dual-channel RAID controller that supports all of the UltraSCSI bus features.
The major features of the controller shelf are:
∙One dual-channel RAID array controller
∙Second controller option for redundancy
∙Memory cache expansion option for the controller
∙Redundant power provided by two universal ac input power supplies (50/60 Hz, 100 to 240 V ac)
∙Dual two-speed blowers for shelf cooling
∙Cache backup provided by an external Uninterruptable Power Supply (UPS)
∙Controls from one-to-four 6-slot Device Expansion Shelves for a total of 24 UltraSCSI devices
∙Can be installed in a RETMA or metric style rackmount cabinets
1.3Controller Shelf Enclosure
The Controller Shelf is housed in an rack-mount enclosure. It has two power supplies, a single RAID Array controller, an empty slot for a second (redundant) controller, two host I/O assemblies, and a dual-bus device I/O assembly. Two blowers located at the back of the enclosure cool the shelf.
An internal backplane assembly connects the RAID controller and the power and host I/O SBBs. The backplane contains five connectors which provide the interface between the Shelf SBBs and the controller. Two 300-pin connectors located in the center of the backplane provide the controller interface. The backplane connection to the blowers is made through two separate 9-pin female connectors, one for each blower.
The backplane also contains a complement of circuit components that provide SCSI bus termination, blower fail/safe circuits, UPS power sense circuit, shelf status and dc power monitoring, and a speaker alarm circuit with an operator controlled alarm disable switch. The outputs of the shelf status and dc power monitoring circuits are connected to two LED indicators on the front panel of the shelf to notify the operator during a malfunction. The alarm disable switch allows the operator to turn off the audible alarm if desired.
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Figure 1–3 shows the major components in the controller shelf. Its characteristics are outlined below.
∙An easily removable, two channel, resident RAID Array controller and an adjacent empty slot for a second (redundant) controller (optional)
∙There are two 68-pin VHDCI female SCSI connectors on the front panel of the device I/O assembly which interconnect the RAID controller to the SCSI buses in each storage shelf. SCSI connections to multiple Device Expansion Shelves are made using Trilink adapters
∙The front of the shelf contains two LEDs that monitor the status of the shelf and the shelf dc power supplies
∙The front of the shelf has a toggle switch that allows the operator to disable the shelf alarm during an error condition
∙The shelf host I/O assemblies each contain two 68-pin VHDCI female SCSI connectors that interconnect the host systems to the RAID controller
∙Each host I/O assembly contain a 9-pin serial port connector (for controller configuration) and a 9-pin UPS monitor connector
∙Two dc power supplies (one redundant) that power the shelf components
∙The shelf contains two high-speed, plug-in blowers for shelf cooling
Figure 1–3 Controller Shelf Major Components
B low ers
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Chapter 1. Product Overview
1.4Shelf Cabinet Installation
The Controller Shelf can be mounted in a StorageWorks metric or RETMA style cabinet. You must install the appropriate shelf rail kit hardware to properly mount the shelf in the cabinet. The RETMA rail kit is supplied with the shelf and contains the installation guide which describes the installation procedure. The rail kit for a metric cabinet is optional.
The commercial UPS supplied with the Controller Shelf is installed in the cabinet using a special mounting bracket designed to accommodate either a metric or RETMA style cabinet. The bracket has two sets of mounting holes at each end which allows its installation into either cabinet.
1.5Shelf Major Components
The major components in the controller shelf (see Figure 1–3) include:
∙Dual-channel RAID array controller (a second redundant controller is optional)
∙A 16-bit, device I/O module with the SCSI bus isolator/converter circuitry
∙Two 16-bit, host I/O modules that interface the host(s) to the shelf controller
∙Two universal 180 W, 50/60 Hz, 120 or 240 Vac power supplies
∙Two dual-speed blowers to cool shelf components
1.5.1 RAID Array Controller
The RAID controller (Figure 1–4) contains two Wide/UltraSCSI/differential host channels and two Wide/UltraSCSI/Single-Ended disk channels. In dual-controller configurations, the controllers support fully automatic and smooth controller failover in the event of a RAID controller fault.
Figure 1–4 RAID Array 3000 Controller
Cache Memory
Modules
SHR-1048
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The controller supports one (for a single controller) or two (for dual-controllers) standard 72-pin cache SIMMs of up to 64 MB. In a dual-controller setup, both controllers must have identical cache configurations and the total usable cache (per controller) will be half the amount installed due to mirroring. Thus, in a single controller setup the maximum usable cache is 128 MB while a redundant setup has a maximum usable cache of 64 MB (per controller).
The RAID Array 3000 controller contains the following features:
∙Single PCB form factor for inclusion in the shelf
∙Support for dual hot-swap controller operation
∙Dual differential Ultra-Wide SCSI host channels
∙Dual single-ended Ultra-Wide SCSI disk channels
∙RAID level 0, 1, 0+1, 4, 5, and JBOD support
∙Voltage/temperature monitoring and support
∙Cluster support for specific operating systems
∙32 Logical Units (LUNs) per host channel (some operating systems may be limited to 8)
∙Support for spare disks
∙UPS backed write caching
∙Per LUN write cache/write back selection
∙Configuration/Maintenance via serial or host SCSI channel using (SWCC) StorageWorks Command Console (refer to the operating system platform kit for details).
∙Update of firmware via host channel
1.5.2 Device I/O Module
The device I/O module (Figure 1–5) provides the electrical interface between the RAID controller and the device buses. The module resides in the far right slot of the Shelf and has the following features:
∙Ability to electrically isolate the controller shelf and the device SCSI buses
∙Single channel, single shelf, single-ended bus operation
∙Single channel, single-ended bus operation for two Device Expansion Shelves using a Trilink adapter
∙External 16-bit data bus connections
∙Switch selectable 16-bit, 8-bit, or no SCSI bus termination
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∙Two-speed blower operation
∙SBB shelf blower control to include error detection, reporting, and automatic corrective action
Figure 1–5 Device I/O Module
Upper
Mounting
Tab
Device Port 0
Connector
Device Port 1
Connector
Lower
Mounting
Tab
SHR-1045
The dual-channel device I/O module has two 68-pin VHDCI female connectors mounted on the front panel (see Figure 1–5). The upper connector is the “device port 0” connector. The lower connector is the “device port 1” connector.
The device I/O module top and bottom guides properly align the module in the shelf and with the backplane connector at the back of the shelf. When you install the module the two-spring steel mounting tabs expand and engage the shelf. The combination of the mounting tabs and the backplane connector ensures that the module is firmly seated.
The front edge of the internal circuit board in the device I/O module contains two-blower status LEDs (see Figure 1–6). Under normal operating conditions,
the LEDs are ON. When there is a blower error or an over-temperature condition, they are FLASHING. The upper LED displays the status of the left blower and the lower LED displays the status of the right blower. The blowers cool the device I/O module by drawing air in through the slots in the front and exhausting it out the rear of the shelf. Refer to the StorageWorks SBB Shelf I/O Module User’s Guide (part no. EK-SBBIO-UG) supplied with the Device Expansion Shelf for a description of the blower status LEDs when troubleshooting a shelf-cooling problem.
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Figure 1–6 Device I/O Module Blower Status LEDs
Left |
SCSI Bus |
Blower |
Address Switch S3 |
LED |
(Not Used) |
Right |
SCSI Bus |
Blower |
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LED |
Termination |
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Switch S4 |
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SHR-1046 |
NOTE
The SCSI bus address switch on the Controller Shelf device I/O module does not control the target addresses of the SBB slots in the Device Expansion Shelves. This switch has been electrically disabled by design. Refer to the StorageWorks SBB Shelf I/O Module User’s Guide supplied with the Device Expansion Shelf for a description of how to set the SCSI IDs in each shelf.
SCSI bus termination switch S4 configures the SCSI bus termination of the Device Expansion Shelves in the RAID Array 3000 storage system. The proper settings for S4 are included in the cabling procedures in Chapter 3 of this guide.
1.5.3 Host I/O Module
The Controller Shelf contains two identical Host I/O modules (see Figure 1–7). The module located directly to the left of the device I/O module is designated as H1 and the module in the adjacent slot as H0. The host I/O module provides the interface between the host bus and the controller(s) in the shelf.
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Figure 1–7 Host I/O Module
Host Out
Host In
CTR
UPS
SHR-1036
The front panel of the host I/O module contains two 68-pin VHDCI SCSI connectors and two 9-pin D connectors. The SCSI connectors provide the SCSI bus connections between the adapter in the host system and the controller(s) in the Shelf. One of the 9-pin D connectors interfaces the UPS status signals to the controller. The other provides a serial connection between its respective controller, the Shelf, and the SWCC configuration/maintenance PC.
The high-density SCSI connectors on the Host I/O module are designated Host In (bottom connector) and Host Out (top connector). Host In provides the SCSI connection for a one-to-four expansion shelf cabinet installation. Cable connections to multiple storage shelves are made through Trilink adapters.
In addition to the front panel connectors, the Host I/O module contains three passive differential SCSI bus terminators that terminate the SCSI bus from the host system. Termination is automatically disabled when a cable is connected to the Host Out connector. The UPS serial connector on the host I/O module (designated CTR 0 and CTR 1) provides shelf status information to the UPS.
NOTE
If you have only one SCSI cable connection to the host I/O module, you must connect the cable to the Host In connector. Do not use any external bus termination. The Host Out connector on the module is used for mid-bus connections in a mul- tiple-host system configuration.
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1.5.4 Shelf Cooling
The device I/O module ensures that the SBBs and Controller Shelf are at the proper operating temperature by monitoring the operational status of the blowers and sensing the ambient air temperature.
The two dual-speed blowers cool all the shelf components by drawing ambient air in through the front of the SBBs and exhausting it out the rear of the Controller Shelf. The blowers normally operate at low speed. Reduction of the airflow through the shelf or an increase in the ambient temperature may result in overheating causing component failure or data corruption.
The device I/O module ambient temperature circuitry monitors the air flowing through the module. If the ambient temperature exceeds 32ºC + 2º C, the circuitry:
∙Turns on both blower LEDs
∙Causes both blowers to switch to the high-speed mode to increase air flow through the shelf
When the I/O module circuitry detects a blower that is not operating or not operating at the correct RPM, this circuitry:
∙Turns ON a LED on the I/O module front panel that identifies the defective blower
∙Causes the operational blower to switch to the high-speed mode to increase air flow through the shelf, thereby maintaining the proper operating environment
NOTE
The Controller Shelf power supply status LEDs also display blower error conditions. However, they do not identify the defective blower, nor do they report ambient air temperature faults.
1.5.5 Controller Shelf Power Supplies
The Controller Shelf has two interchangeable, air-cooled, 180 watt AC power supply SBBs (see Figure 1–8) located at the left two SBB slots of the shelf. The power supplies provide redundant power if one of the units should malfunction. Each supply provides +5 and +12 Vdc to power the RAID controller(s), the host I/O modules, the device I/O module, and the blowers. The first power supply from the left edge of the shelf is designated as "A" and the second as "B". The SBB front panel has an ac input power receptacle, a power supply status LED, and a shelf status LED.
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Figure 1–8 Power Supply
SHR-1034
1.5.6 Uninterruptable Power Supply (UPS)
The primary function of the UPS is to keep the entire storage system powered-up to enable the controller(s) to flush cache to disks. The UPS also protects the storage system from problems associated with poor quality AC power or a complete loss of AC power. The UPS is normally mounted in a lower shelf slot in the cabinet using a custom set of mounting brackets.
The major features of the UPS include Battery Management Technology (doubles battery life and speeds recharge time), hot-swap batteries to simplify service, voltage regulation, power control which enables scheduled shutdowns and maximized run time, and network surge protection.
The front panel display has user controls (LEDs and control buttons) and the rear panel contains an RS-232 COMM port which provides UPS status to the electronics in the Controller Shelf. The rear panel also contains the network surge protector, and four power receptacles. An audible alarm is activated when input power fails, as a low battery warning, or whenever the UPS is in need of servicing. The front panel control switches are used to set the output voltage level and battery low-warning option.
The UPS automatically recharges its battery when power is returned following a power failure. Recharge time is less than four hours depending on the energy requirements of your load and the length of the power outage.
Its own installation, operation, and service manual support the UPS. The manual describes the UPS in detail and is part of the documentation set enclosed with your storage system.
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1.66-Slot Device Expansion Shelf (Optional)
NOTE
The Device Expansion Shelf (DS-SWXRA-GN) must have a revision level of B01 (or higher) to operate with the RAID Array 3000 Controller Shelf. Also, the Personality I/O module supplied with the shelf (part no. 70-33067-02) must have a minimum revision level of H01 or higher.
The RAID Array 3000 Controller Shelf is designed to operate with the StorageWorks BA356-S Series Device Expansion Shelf (shown in Figure 1–2. The Device Expansion Shelf is a rackmount enclosure that houses the storage devices for your storage system installation. The Controller Shelf can be connected to one, or up to four Device Expansion Shelves giving the storage system a maximum capacity of 24 storage devices.
The Device Expansion Shelf is equipped with two dc power supplies, a personality I/O module that provides the UltraSCSI bus interface, and six empty slots for storage device SBBs. The user’s guide for the Device Expansion Shelf is packaged with the unit and must be used with this document to properly install and configure the RAID Array 3000 Controller Shelf.
1.7Connecting the RA3000 Controller Shelf to a Host System
This section illustrates how to connect four possible Controller Shelf/Host configurations. The configurations are:
∙Single host, single adapter, with one active controller
∙Single host, single adapter, with two active controllers
∙Single host, dual adapter, two port with two active controllers
∙Dual host, single adapter, with one active controller per host
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Figure 1–9 Single Host, Single Adapter, with One Active Controller
Host
System
Host
Adapter
SHR-1316
1BA356 Device Expansion Shelves
2RAID Array 3000 Controller Shelf
3SCSI Cable BN37A-05 (host adapter connection made using Technology Adapter cable BN38E-OB, not shown)
4Host In Connector on H0 I/O Module
5Host-In Connector to H1 I/O Module (not used in this configuration)
6SCSI Cables BN37A-OE (2) for Device I/O Module 0
7SCSI Cables BN37A-OE (2) for Device I/O Module 1
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Figure 1–10 Single Host, Single Adapter, with Two Active Controllers
Host
System
Host
Adapter
SHR-1317
1BA356 Device Expansion Shelves
2Host In Connector on H0 I/O Module
3RAID Array 3000 Controller Shelf
4SCSI Cable BN37A-05 (host adapter connection made using Technology Adapter cable BN38E-OB, not shown)
5SCSI Cable BN37A-OE combining Host Modules H0 and H1
6Host In Connector on H0 I/O Module
7Host In Connector on H1 I/O Module
8H1 Host I/O Module Host-Out Connector (not used in this configuration)
9SCSI Cables BN37A-OE (2) for Device I/O Module 0
10SCSI Cables BN37A-OE (2) for Device I/O Module 1
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Figure 1–11 Single Host, Dual Adapter, Two Port with Two Active Controllers
Host
System
Host
Adapter
Host
Adapter
SHR-1318
1BA356 Device Expansion Shelves
2RAID Array 3000 Controller Shelf
3SCSI Cable BN37A-05 (host adapter connection made using Technology Adapter cable BN38E-OB, not shown)
4SCSI Cable BN37A-05 (host adapter connection made using Technology Adapter cable BN38E-OB, not shown)
5Host In Connector on H0 I/O Module
6Host In Connector on H1 I/O Module
7SCSI Cables BN37A-OE (2) for Device I/O Module 0
8SCSI Cables BN37A-OE (2) for Device I/O Module 1
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Figure 1–12 Dual Host, Single Adapter, with One Active Controller per Host
Host
System
Host
Adapter
Host
System
Host
Adapter
SHR-1319
1BA356 Device Expansion Shelves
2RAID Array 3000 Controller Shelf
3SCSI Cable BN37A-05 (host adapter connection made using Technology Adapter cable BN38E-OB, not shown)
4SCSI Cable BN37A-05 (host adapter connection made using Technology Adapter cable BN38E-OB, not shown)
5Host In Connector on H0 I/O Module
6Host In Connector on H1 I/O Module
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