RA8000 and ESA12000
Storage Subsystems
User's Guide
EK-SMCPR-UG. A01 387404-001
Compaq Computer Corporation
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
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Items.”
© 1998 Compaq Computer Corporation.
All rights reserved. Printed in U.S.A.
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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
About This Guide
...................................................................................................... xiii
......................................................................................................xv
1 Product Description
1.1 Subsystem Overview..................................................................................................1–1
1.2 Major Components ....................................................................................................1–6
1.2.1 Array Controllers....................................................................................................1–8
1.2.2 SCSI Buses.......................................................................................................... 1–10
1.2.3 Single-Ended I/O Module (SE I/O) ......................................................................1–11
1.2.3.1 Expanding the UltraSCSI Bus ............................................................................1–12
1.2.3.2 Controlling the Internal SCSI Bus..................................................................... 1–13
1.2.3.3 Controlling the External SCSI Bus....................................................................1–13
1.2.3.4 Controlling the Fault Bus.................................................................................. 1–13
1.2.3.5 “Warm Swapping” I/O Modules and Cables...................................................... 1–13
1.2.3.6 Maximum Bus Length....................................................................................... 1–14
1.3 Error Detection and Reporting .................................................................................1–14
1.3.1 Fault Bus .............................................................................................................1–14
1.3.2 Environmental Monitor Unit (EMU).................................................................... 1–15
1.3.2.1 EMU Front Panel.............................................................................................. 1–13
1.3.2.2 Array Controller Status.....................................................................................1–17
1.3.2.3 I/O Module Status............................................................................................. 1–17
1.3.2.4 Enclosure Configuration Information................................................................ 1–17
1.3.3 Power Verification and Addressing (PVA) Module.............................................. 1–18
1.3.3.1 Monitoring Power Supply Operation................................................................. 1–19
1.3.3.2 Master Enclosure Controlled Power Shutdown.................................................. 1–20
1.3.3.3 Expansion Enclosure Initiated Power Shutdown................................................ 1–21
1.4 Storage Device SBBs.............................................................................................. 1–22
1.5 Power Configuration...............................................................................................1–22
1.5.1 AC Input Power Entry Controllers .......................................................................1–23
1.6 Power Supply SBBs................................................................................................1–24
1.7 Standard (4 + 1) Power Configuration ................................ ................................ ..... 1–25
1.8 Redundant (4 + 4) Power Configuration..................................................................1–26
1.9 ECB SBBs .............................................................................................................. 1–28
EK–SMCPR–UG. A01 387404-001 v
RA8000 and ESA12000 Storage Subsystems
1 Product Description (continued)
1.10 Subsystem Cooling ............................................................................................... 1–30
1.11 Setting the PVA SCSI Address.............................................................................. 1–32
1.11.1 Compaq Supported Master PVA Address........................................................... 1–33
1.11.2 Compaq Supported Expansion PVA Addresses .................................................. 1–34
1.11.3 Non-Supported PVA SCSI Bus Addresses.......................................................... 1–34
2 Installing the RA8000 and ESA12000 Storage Subsystems
2.1 Installing the RA8000................................................................................................2–1
2.1.1 RA8000 Site Preparation........................................................................................2–1
2.1.2 Placing the RA8000 Storage Enclosure................................................................ ..2–2
2.1.3 Connecting the Subsystem to the Host ...................................................................2–2
2.2 Installing the ESA12000............................................................................................2–2
2.2.1 Site Preparation......................................................................................................2–2
2.2.2 Moving the ESA12000 to It’s Designated Site .......................................................2–3
2.2.3 Joining Adjacent ESA12000’s................................................................................2–4
2.2.4 SW42U Cabinet Rack Mount Template..................................................................2–4
2.3 BA370 Major Components.........................................................................................2–5
2.3.1 Installing Storage Building Blocks (SBBs).............................................................2–7
2.3.2 Installing the External Cache Battery (ECB) ........................................................ 2–11
2.4 Installing Additional Components (Options)............................................................2–12
2.4.1 Installing BA370 Universal Mounting Kit DS-BA370-XB ...................................2–12
2.4.2 Connecting AC Power and ECB Cables................................................................2–25
2.4.3 Installing the Ds-BA356-SG UltraSCSI Hub 41U RETMA Shelf Mounting Kit ...2–26
2.4.4 Installing a Filler Panel Mounting Kit in a 41U RETMA Cabinet......................... 2–30
2.4.5 Installing the DS-SWX4U-2U ECB Shelf Mounting Kit.......................................2–33
2.4.6 Installing the Fibre Channel Hub Mounting Kit.................................................... 2–36
2.4.7 Cabling a Master Enclosure to an Expansion Enclosure(s) ...................................2–46
2.4.8 Setting the PVA Addresses .................................................................................. 2–49
2.5 Installing SBBs........................................................................................................2–52
2.5.1 Installing SBB Disk Drives..................................................................................2–52
2.5.2 Installing Power Supply SBBs.............................................................................. 2–53
2.5.3 Installing the AC Input Power Controller.............................................................2–55
2.5.4 Installing the External Cache Battery (ECB) ........................................................ 2–56
387404-001 EK–SMCPR–UG. A01vi
3 Configuring the Storage Cabinet
3.1 Configuring the EMU ................................................................................................3–1
3.1.1 Connecting the EMU Communications Bus ...........................................................3–2
3.1.2 Setting the Temperature Sensors............................................................................3–2
3.1.3 Setting the Blower Speed Control ..........................................................................3–4
3.1.4 Alarm Control Switch............................................................................................3–5
3.2 Setting the PVA Addresses.....................................................................................3–6
4 Error Analysis and Fault Isolation
4.1 Storage Subsystem Error Reporting ..........................................................................4–1
4.2 EMU Error and Fault Status Reporting......................................................................4–4
4.3 EMU Subsystem Status LEDs...................................................................................4–5
4.3.1 EMU Status LEDs..................................................................................................4–5
4.3.2 Configuration Fault Code Reporting.......................................................................4–9
4.3.3 Shutting Down the Subsystem.............................................................................. 4–15
4.4 Controller Error Conditions ....................................................................................4–15
4.5 Storage Device Fault Notification........................................................................... 4–16
4.6 Power Supply Fault Notification............................................................................. 4–18
4.7 I/O Module and Expansion Cable Error Conditions................................................. 4–20
4.7.1 I/O Module or Expansion Cable........................................................................... 4–20
4.7.2 Incompatible I/O Modules ...................................................................................4–20
4.7.3 No I/O Module Installed ......................................................................................4–20
4.7.4 TERMPOWER Errors .......................................................................................... 4–21
5 Replacing Components
5.1 Replacing a Controller, Cache Module or External Cache Battery.............................5–1
5.1.1 Tools Required.......................................................................................................5–1
5.1.2 Precautions ............................................................................................................5–1
5.2 Preparing Your Host System.....................................................................................5–2
5.2.1 Back Up the System...............................................................................................5–2
5.3 Array Controller Replacement ..................................................................................5–3
5.3.1 Array Controller Removal......................................................................................5–3
5.3.2 Array Controller Installation..................................................................................5–4
5.4 Cache Module Replacement......................................................................................5–6
5.4.1 Cache Module Removal.........................................................................................5–6
5.4.2 Cache Module Installation .....................................................................................5–7
5.5 External Cache Battery Replacement ........................................................................5–8
5.6 Shutting Down the Subsystem................................................................................. 5–10
5.6.1 Automatic Shutdown Using Standby Power Mode ............................................... 5–10
5.6.2 Full Power Shutdown...........................................................................................5–10
5.6.2.1 Shutting Down the Subsystem for a Cold Swap................................................. 5–11
5.6.2.2 Turning On the Subsystem................................................................................5–11
5.6.2.3 Disabling the External Cache Batteries..............................................................5–12
5 Replacing Components (continued)
5.7 Disk Drive SBB Replacement.................................................................................5–13
5.7.1 SBB Handling Procedures.................................................................................... 5–14
Contents
EK–SMCPR–UG. A01 387404-001 vii
RA8000 and ESA12000 Storage Subsystems
5.7.1.1 Hot Swap.......................................................................................................... 5–15
5.7.1.2 Warm Swap ......................................................................................................5–15
5.7.1.3 Cold Swap.........................................................................................................5–15
5.7.2 Disk Drive SBB Removal ....................................................................................5–16
5.7.3 Single Disk Drive SBB Installation...................................................................... 5–16
5.7.4 Multiple Disk Drive SBB Installation in an UltraSCSI Enclosure......................... 5–17
5.8 Power Supply SBB Replacement............................................................................. 5–19
5.8.1 Handling Instructions ........................................................................................... 5–20
5.8.2 Power Supply SBB Removal ................................ ................................ ................ 5–20
5.8.3 Power Supply SBB Installation............................................................................ 5–20
5.9 Enclosure Blowers.................................................................................................. 5–21
5.9.1 Enclosure Blower Removal..................................................................................5–21
5.9.2 Enclosure Blower Installation .............................................................................. 5–21
5. 10 AC Input Power Entry Controller..........................................................................5–23
5.10.1 AC Input Power Entry Controller Removal........................................................ 5–24
5.10.2 AC Input Power Entry Controller Installation..................................................... 5–24
5. 11 EMU ...................................................................................................................5–25
5.11.1 EMU Removal...................................................................................................5–25
5.11.2 EMU Installation................................................................................................5–25
5.12 PVA Module................................................................ ................................ ......... 5–26
5.12.1 PVA Removal.................................................................................................... 5–27
5.12.2 PVA Installation ................................................................................................ 5–28
5.13 I/O Module........................................................................................................... 5–29
5.13.1 I/O Module Removal.......................................................................................... 5–30
5.13.2 I/O Module Installation......................................................................................5–30
5.14 FRU Parts List...................................................................................................... 5–32
387404-001 EK–SMCPR–UG. A01viii
Figures
Figure 1–1 BA370 Rack Mountable Enclosure................................................................1–1
Figure 1–2 RAID 8000 Pedestal......................................................................................1–2
Figure 1–3A ESA12000 Storage Cabinet (Shown with two BA370 Rack Mountable
Enclosures in a Single Cabinet)...................................................................1–3
Figure 1–3B Joined ESA12000 Storage Cabinet (Shown with Four BA370 Rack
Mountable Enclosures in Two Cabinets).....................................................1–4
Figure 1–4 Configured BA370 Rack Mountable Unit Major Components.......................1–7
Figure 1–5 HSG80 Array Controller and Cache Modules................................ ................1–8
Figure 1–6 HSZ80 Array Controller and Cache Modules................................................1–9
Figure 1–7 SCSI Buses................................................................................................. 1–10
Figure 1–8 Single-Ended I/O Module Location............................................................. 1–11
Figure 1–9 Single-Ended I/O Module ........................................................................... 1–12
Figure 1–10 Environmental Monitor Unit (EMU)......................................................... 1–15
Figure 1–11 Power Verification and Addressing (PVA) Module................................... 1–18
Figure 1–12 Disk Drive SBB ........................................................................................1–22
Figure 1–13 AC Input Power Entry Controller.............................................................. 1–23
Figure 1–14 Typical Shelf Power Supply SBB..............................................................1–24
Figure 1–15 Standard Power Configuration (4 + 1).......................................................1–26
Figure 1–16 Redundant Power Configuration (4 + 4)....................................................1–27
Figure 1–17 Dual- Battery (ECB) SBB .........................................................................1–28
Figure 1–18 Cache-to ECB-Connection ........................................................................1–30
Figure 1–19 Dual Speed Blower Locations ................................................................... 1–31
Figure 1–20 PVA SCSI Address Switch........................................................................ 1–32
Figure 1–21 Enclosure SCSI Bus Addresses for all SBB Device IDs.............................1–33
Figure 2–1 RA8000 Minimum Installation Clearance Measurements..............................2–1
Figure 2–2 Minimum Installation Clearance Measurements............................................2–2
Figure 2–3 ESA12000 Storage Subsystem ......................................................................2–3
Figure 2–4 Leveler Foot Adjustment...............................................................................2–4
Figure 2–5 ESA12000 Subsystem Major Components ....................................................2–5
Figure 2–6 SCSI Buses, Associated Ports, and Device Addressing..................................2–8
Figure 2–7 Installing SBB Power Supply (n+1 Shown)...................................................2–9
Figure 2–8 Installing an AC Input Power Entry Controller ........................................... 2–10
Figure 2–9 Installing the External Cache Batteries into the ESA12000 .........................2–11
Figure 2–10 Installing Left-Lower Mounting Plate (41U RETMA Shown)....................2–15
Figure 2–11 Installing Right-Lower Mounting Plate (41U RETMA Shown) .................2–16
Figure 2–12 Positioning the LED Bracket on the BA370...............................................2–18
Contents
EK–SMCPR–UG. A01 387404-001 ix
RA8000 and ESA12000 Storage Subsystems
Figures (continued)
Figure 2–13 Installing the LED Bracket and the BA370 Mounting Brackets................. 2–19
Figure 2–14 Installing the Cover Plate.......................................................................... 2–22
Figure 2–15 Installing ECB Y-Cables........................................................................... 2–25
Figure 2–16 Mounting Bracket Stop Positions.............................................................. 2–27
Figure 2–17 Mounting Example Using Stop Position 1.................................................2–27
Figure 2–18 Three-Port UltraSCSI Configuration Layout..............................................2–29
Figure 2–19 Five-Port UltraSCSI Configuration Layout................................................ 2–29
Figure 2–20 Installing the Cover Plate.......................................................................... 2–32
Figure 2–21 Installing the ECB Shelf Mounting Kit...................................................... 2–34
Figure 2–22 Three FC Hub Configuration Example...................................................... 2–36
Figure 2–23 Installing U-Nuts and Brackets..................................................................2–38
Figure 2–24 Attaching Slide Brackets...........................................................................2–39
Figure 2–25 Installing Slide Brackets ...........................................................................2–40
Figure 2–26 Dual Controller, Dual Hub Configuration.................................................. 2–41
Figure 2–27 Single Controller/Single Server/Single Port...............................................2–42
Figure 2–28 Single Controller/Single Server/Dual Port Configuration ..........................2–42
Figure 2–29 Dual Controller/Single Server/Single Port Configuration ..........................2–43
Figure 2–30 Dual Controller/Single Server/Dual Port Configuration............................. 2–43
Figure 2–31 Single Controller/Dual Server/Dual Port Configuration............................. 2–44
Figure 2–32 Multiple Server/Dual Controller Configuration......................................... 2–44
Figure 2–33 Clustered Dual Server/Single Hub Configuration .......................................2–45
Figure 2–34 SE I/O Port Identification.......................................................................... 2–46
Figure 2–35 SE I/O Port Wiring (One Expansion Unit)................................................. 2–47
Figure 2–36 SE I/O Connections for Two Expansion Units...........................................2–48
Figure 2–37 EMU Front Panel...................................................................................... 2–48
Figure 2–38 Multiple EMUs Connected Together......................................................... 2–49
Figure 2–39 PVA Module Front Panel.......................................................................... 2–49
Figure 2–40 Expansion Enclosure SCSI Bus Addresses ................................................2–51
Figure 2-41 Installing Power Supply SBB (4+1 Shown)................................................ 2–54
Figure 2–42 ECB Shelf Location (ESA12000 Shown)....................................................2–56
Figure 4–1 Storage Subsystem Status LEDs....................................................................4–2
Figure 4–2 EMU Front Panel Layout..............................................................................4–4
Figure 4–3 HSG80 and HSZ80 OCP Display ...............................................................4–15
Figure 4–4 Disk Drive SBB LEDs ................................................................................4–16
Figure 4–5 Power Supply SBB Status LEDs .................................................................4–18
387404-001 EK–SMCPR–UG. A01x
Figures (continued)
Figure 4–6 I/O Module LEDs .......................................................................................4–21
Figure 5–1 Array Controllers and Cache Modules............................................................5–3
Figure 5–2 External Cache Battery Storage Building Block............................................5–8
Figure 5–3 External Cache Batteries............................................................................. 5–12
Figure 5–4 Location of the Disk Drive SBB.................................................................. 5–13
Figure 5–5 Placement of Multiple Disk Drive SBBs..................................................... 5–18
Figure 5–6 Location of the Power Supply SBB............................................................. 5–19
Figure 5–7 Location of the Blowers.............................................................................. 5–22
Figure 5–8 Location of the AC Input Power Entry Controller .......................................5–23
Figure 5–9 Location of the EMU ..................................................................................5–25
Figure 5–10 EMU Communication............................................................................... 5–26
Figure 5–11 Location of the PVA ................................................................................. 5–27
Figure 5–12 Location of the I/O Modules .....................................................................5–29
Figure 5–13 Storage Cabinet Field Replaceable Parts (RA8000 Pedestal Shown).......... 5–33
Contents
EK–SMCPR–UG. A01 387404-001 xi
RA8000 and ESA12000 Storage Subsystems
Tables
Table 1–1 EMU Front Panel Component Descriptions..................................................1–16
Table 1–2 Storage Subsystem Major Power Components................................ .............. 1–23
Table 1–3 ECB Status Indications................................................................................. 1–29
Table 1–4 Expansion Enclosure Address Combinations............................................... 1–34
Table 2–2 Installing Rails for the Upper BA370 ........................................................... 2–18
Table 2–3 Installing Rails for the Lower BA370........................................................... 2–18
Table 2–5 Expansion Enclosure Address Combinations............................................... 2–28
Table 3–1 EMU Set Point Temperature Conversions ......................................................3–3
Table 3–2 Temperature Set Point Rules – EMU Firmware Vers. 1.0 and 1.1...................3–3
Table 3–3 Temperature Set Point Rules – EMU Firmware Vers. 1.2 and 1.3...................3–4
Table 3–4 Expansion Enclosure Address Combinations..................................................3–7
Table 4–1 Subsystem Status LEDs...................................................................................4–3
Table 4–2 EMU Subsystem Status LEDs ........................................................................4–5
Table 4–3 EMU Status Displays ..................................................................................... 4–6
Table 4–4 EMU Fault Code LEDs Displays.................................................................. 4–10
Table 4–5 Storage SBB Status LED Conditions............................................................ 4–17
Table 4–6 Storage SBB Status LED Displays................................................................ 4–17
Table 4–7 Power Supply SBB Status LED Conditions .................................................. 4–18
Table 4–8 Power Supply SBB Status LED Displays.......................................................4–19
Table 5–1 SBB Handling Rules.....................................................................................5–14
Table 5–2 Subsystem Field Replaceable Units..............................................................5–32
387404-001 EK–SMCPR–UG. A01xii
Revision Record
This Revision Record provides a concise publication history of this guide. It lists the manual
revision levels, release dates, and summary of changes.
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.
Revision Level Date Summary of Changes
EK–SMCPR–UG. A01 November 1998 Initial release
EK–SMCPR–UG. A01 387404-001 xiii
About This Guide
This section identifies the users of this guide and describes the contents and structure. In
addition, it includes a list of conventions used in this guide and related documentation.
RA8000 and ESA12000 Storage Subsystems User's Guide
This guide provides a product description, set up, configuration, and maintenance
information for the RAID Array 8000 (RA8000) and the Enterprise Storage Array 12000
(ESA12000) Storage Subsystems.
Visit Our Web Site for the Latest Information
Check our web for the latest drivers , technical tips, and documentation. We can be found
in the technical area of our web page,
Intended Audience
This guide is intended for users who are responsible for installing, configuring, and
repairing the RA8000 and ESA12000 Storage Subsystems.
Document Structure
This guide contains the following chapters:
Chapter 1: Product Description
Product Description
Subsystems. It also describes their components, features, and operating functions.
provides a product overview of the RA8000 and ESA12000 Storage
http://www.compaq.com/
Chapter 2: Installing the RA8000 and ESA12000
Installing the RA8000 and ESA12000
site preparation, installing SBBs, and cable connections between the subsystem and the
host. The chapter also describes how to install options and how to connect a master
ESA12000 to an expansion enclosure.
EK–SMCPR–UG. A01 387404-001 xv
describes how to install the subsystem. It includes
RA8000 and ESA12000 Storage Subsystems
Chapter 3: Configuring the Storage Cabinet
Configuring the Storage Cabinet
bus and setting monitoring controls.
describes how to connect the EMU communications
Chapter 4: Error Analysis and Fault Isolation
Error Analysis and Fault Isolation
that may occur during the enclosure's initialization and operation.
describes the errors, faults, and significant events
Chapter 5: Replacing Components
Replacing Components
Replaceable Units (FRUs) in the subsystem.
describes the procedures to remove and install the Field
Conventions
This guide uses the following conventions:
Style Meaning
boldface type For emphasis and user input.
italic type
plain monospace type
For emphasis, manual titles, utilities, menus, screens, and
filenames
Screen text.
Related Documentation
For additional information on the RAID array controller, refer to the following
StorageWorks documents:
Document Title Document Part Number
HSG80 Array Controller ACS Version 8.x
Configuration and CLI Reference Guide EK-HSG80-RG/387402-001
HSG80 Array Controller ACS Version 8.x
Maintenance and Service Guide EK-HSG80-SV/355218-001
HSZ80 Array Controller ACS Version 8.x
Configuration and CLI Reference Guide EK-HSZ80-RG/388222-001
HSZ80 Array Controller ACS Version 8.x
Maintenance and Service Guide EK- HSZ80-SV/388221-001
xvi 387404-001 EK–SMCPR–UG. A01
1
Product Description
This chapter describes the RA8000 and ESA12000 Storage Subsystems including the Ultra Small
Computer System Interface (SCSI-3) connections (ports) for StorageWorks building block (SBB)
shelves.
1.1 Subsystem Overview
The RA8000 and ESA12000 Storage Subsystems are members of Compaq’s
StorageWorks family of modular enclosures. They share a common major component, the
BA370 Rack Mountable Enclosure (Figure 1-1), that includes an Environmental Monitor
Unit (EMU), a Power Verification and Addressing (PVA) module, power supplies, and
an AC Power Entry Controller. StorageWorks storage devices, redundant power supplies,
array controller(s), cache module(s), External Cache Battery (ECB), and redundant ac
power entry controllers may also be included. Figures 1-2 , 1-3A, and 1-3B show three
possible BA370 configurations.
Figure 1–1 BA370 Rack Mountable Enclosure
CXO5797A
EK–SMCPR–UG. A01 387404-001 1–1
RA8000 and ESA12000 Storage Subsystems
Figure 1–2 RAID 8000 (RA8000) Pedestal
SHR-1145
1–2 387404-001 EK–SMCPR–UG. A01
Chapter 1. Product Description
Figure 1–3A ESA12000 Storage Cabinet (shown with two BA370
rack-mountable enclosures in a single cabinet)
CXO6618A
EK–SMCPR–UG. A01 387404-001 1–3
RA8000 and ESA12000 Storage Subsystems
Figure 1–3B Joined ESA12000 Storage Cabinets (shown with four BA370
rack-mountable enclosures in two cabinets)
CXO6619A
1–4 387404-001 EK–SMCPR–UG. A01
Chapter 1. Product Description
The major features of the BA370 rack mountable enclosure are as follows:
Holds up to twenty-four 3½-inch disk drive SBBs per BA370
•
Redundant power distribution to eliminate single points of failure
•
Redundant ac power entry controllers
•
Contains six, single-ended, Ultra Wide SBB backplane SCSI buses
•
Minimizes SCSI bus cables
•
A StorageWorks HSG80 or HSZ80 RAID array controller (can hold single or dual
•
redundant array controllers)
All major components, except the single ended I/O modules and PVA module, can
•
be replaced using the hot-swap method which reduces down time (described in
Chapter 5)
Fault monitoring and reporting capability for incorrect voltages, shelf blower failure,
•
power supply failure, and excessive operating temperature
The BA370 may be used as a master or an expansion unit
•
One or two expansion enclosures can be connected to a master enclosure which
•
provides SBB slots for up to 72 disk drives
NOTE
The mas ter unit c ontains the arr ay control ler(s) and cache
module(s). Expansion units contain additional storage
devices on the same SCSI buses.
The 24-SBB RAID Array 8000 storage subsystem and the ESA12000 storage
•
subsystem are Class A FCC certified
EK–SMCPR–UG. A01 387404-001 1–5
RA8000 and ESA12000 Storage Subsystems
1.2 Major Components
A fully configured redundant subsystem (Figure 1-4) consists of the following major
components:
1) A BA370 Rack mountable enclosure (1)
2) Cooling Fan (8)
3) Single-Ended I/O Modules (6)
4) Optional Fibre Channel or UltraSCSI Hub
(12-port Fibre Channel Hub shown)
5) Cache module (2)
6) HSG80 Fibre Channel RAID Array controllers (2) or
HSZ80 SCSI RAID Array Controllers (2)
7) Power Verification and Addressing (PVA) Module (1)
8) Environmental Monitor Unit (EMU) (1)
9) AC Input Power Controllers (1 standard, 2 shown in Figure 1–4)
10) 180-watt power supply (5 standard, 8 shown in Figure 1-4)
11) External Cache Battery (ECB), single
External Cache Battery (ECB), dual
Also, Power Distribution Unit (2)
Not shown, mounted in ESA12000 cabinet only
1–6 387404-001 EK–SMCPR–UG. A01
Chapter 1. Product Description
Figure 1–4 Configured BA370 Rack Mountable Unit Major Components
11
10
9
2x
8
7
6
2x
5
2x
4
1
2
3
CXO6568A
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RA8000 and ESA12000 Storage Subsystems
1.2.1 Array Controllers
Either an HSG80 Fibre Channel array controller or an HSZ80 UltraSCSI array controller
can be used. The array controller presents the storage devices to the host system as
another device connected to one of its I/O buses. The array controller then processes the
I/O requests to the storage devices of the subsystem. The array controller(s) mount in the
lower front of the cabinet (see Figure 1-5 for HSG80 and Figure 1-6 for the HSZ80).
Installing two array controllers with cache modules provides complete array controller
redundancy as described in either the
Maintenance and Service Guide
Maintenance and Service Guide
Array controllers and cache modules removed from array
controller card cage for clarity in Figures 1-5 and 1-6.
Modules are not a single unit.
Figure 1–5 HSG80 Array controller and Cache Modules
Controller
Card Cage
HSG80 Array Controller ACS Version 8.3
or
HSZ80 Array Controller ACS Version 8.3
.
NOTE
Controller
Shelf or
Enclosure
Array Controller
Modules
Cache
Modules
SHR-1146
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Chapter 1. Product Description
Figure 1–6 HSZ80 Array controller and Cache Modules
Controller
Card Cage
Controller
Shelf or
Enclosure
Array Controller
Modules
Cache
Modules
SHR-1146
The array controller documentation describes procedures for:
•
Configuring the array controller
•
Setting initial array controller parameters using a maintenance terminal
•
Determining the proper method for replacing SBBs
The array controller software revision level determines the devices supported by the array
controller.
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/
1.2.2 SCSI Buses
There are six Ultra Wide SCSI buses associated with the array controller. The ports and
device addresses for the master unit are shown in Figure 1-7.
Figure 1–7 SCSI Buses
Port/
Bus 2
Port
Bus 4
Port
Bus 6
ID3
ID2
ID1
Typical Backplane Connection
ID0
ID6
ID7
Port/
Bus 1
Port/
Bus 3
Device
Address 3
Device
Address 2
Device
Address 1
Device
Address 0
Device
Address 6
Device
Address 7
Port/
Bus 5
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Chapter 1. Product Description
The subsystem enclosure supports single-ended, Ultra Wide storage devices. The
configuration rules for the SCSI buses are as follows:
All devices and ports in the same column are on the same SCSI bus or port
•
All devices in the same row (device shelf) have the same device address
•
You may only install array controller-compatible Ultra Wide storage SBBs
•
Device addresses 4 and 5 are only used when the SBB has a device address switch
•
Device addresses are determined by the backplane connector into which the device is
•
inserted unless the SBB has a device address switch
1.2.3 Single-Ended I/O Module (SE I/O)
Figure 1–8 Single-Ended I/O Module Location
I/O Modules
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RA8000 and ESA12000 Storage Subsystems
Each SCSI enclosure, whether it is a master or an expansion enclosure, has six I/O
modules mounted at the bottom rear of the enclosure as shown in Figure 1-8. In all
enclosures these modules are the interconnection point between the array controller in the
master enclosure and the devices in the expansion enclosures. In an UltraSCSI RAID
subsystem, the I/O modules, the internal SCSI buses, and the array controller ports all
have the same number. For example, array controller port 2, SCSI bus 2, and I/O module
2 are different elements of the same bus. Figure 2–34, Chapter 2, identifies the six I/O
port numbers at the bottom of the enclosures. The major features of the single-ended I/O
module are described in the following sections.
1.2.3.1 Expanding the UltraSCSI Bus
Each I/O module has an UltraSCSI single-ended bus expansion integrated circuit. This
device isolates the internal and external SCSI bus and extends the length of the SCSI bus.
Figure 1–9 Single-Ended I/O Module
External
TERM POWER
disable LED
Internal
TERM POWER
disable LED
CXO5947A
The two VHDCI female connectors are the connection points for expanding the SCSI
buses between enclosures (see Figure 1-9). These connectors are wired in parallel and act
as a tri-link connector. In an expansion configuration, Compaq recommends that
maximum cable length not exceed 1.5 m (4.6 ft.) between enclosures. Compaq supplies a
cable kit, DS-BNK37-IE, containing the necessary cables to connect an expansion unit.
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Chapter 1. Product Description
1.2.3.2 Controlling the Internal SCSI Bus
The I/O module controls the internal SCSI bus in the following manner:
Isolates the internal SCSI bus from the external SCSI bus.
•
Provides single-ended SCSI bus termination.
•
Disconnects the internal SCSI bus from the external SCSI bus when the EMU so
•
directs.
Distributes TERMPOWER (+5 V dc) to the internal SCSI bus.
•
Turns ON the green internal TERMPOWER LED (see Figure 1-9) when the internal
•
TERMPOWER is present.
Turns OFF the green internal TERMPOWER LED (see Figure 1-9) when there is an
•
internal TERMPOWER overcurrent condition.
1.2.3.3 Controlling the External SCSI Bus
The I/O module controls the external SCSI bus in the following manner:
Provides single-ended SCSI bus termination.
•
Distributes TERMPOWER (+5 V dc) to the external SCSI bus.
•
Turns ON the green external TERMPOWER LED (see Figure 1-9) when the external
•
TERMPOWER is present.
Turns OFF the green external TERMPOWER LED(see Figure 1-9) when there is an
•
external TERMPOWER overcurrent condition.
Automatically disables the external bus termination when a cable is connected to the
•
right hand VHDCI connector.
1.2.3.4 Controlling the Fault Bus
The I/O module controls the fault bus operation in the following manner:
Provides a fault bus driver for improved signal transmission.
•
Distributes the FAULT_CLK and FAULT_DATA signals from the master enclosure
•
to the expansion enclosures.
Distributes the SHELF_OK and SWAP_L signals from the expansion enclosures to
•
the master enclosure.
1.2.3.5 “Warm Swapping” I/O Modules and Cables
You can replace either the I/O module or a cable when the associated SCSI bus is
quiesced (no data transfers occurring) – a warm swap. This enables you to correct
problems affecting only one bus without disrupting data transfers on the other five buses.
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1.2.3.6 Maximum Bus Length
The maximum bus length, including external cables (distance from the I/O module
terminator to the last terminator on the bus) is a function of the bus speed and the number
of devices. If the external bus is configured point to point (from SE I/O module-to-SE I/O
module with no devices installed in between), the cables may be extended to 20 meters
due to the isolation and re-timing circuitry of the SE I/O module.
1.3 Error Detection and Reporting
The subsystem error detection and reporting function has two major elements – the fault
bus and the EMU (environmental monitor unit). For a detailed discussion of error
detection, fault reporting, and correction, refer to Chapter 4, Error Analysis and Fault
Isolation.
1.3.1 Fault Bus
The subsystem fault bus monitors subsystem operation and reports fault conditions to
either the HSG80 or the HSZ80 array controller and the EMU. The array controller and
EMU then report the error condition to the user. The fault bus monitors the following
conditions:
Blower failure (SHELF_OK)
•
Power supply failure (SHELF_OK)
•
Storage device removal (SWAP_L)
•
Storage device installation (SWAP_L)
•
SBB failure (FAULT_CLK, FAULT_DATA)
•
The fault bus consists of three subsystem backplane signals routed to the array controller
port connectors as follows:
•
Shelf Status Signal
power (ac and dc) and blower operation
•
SBB Swap Signal
inserted in the subsystem
•
SBB Fault Signals
indicates a device fault. This device fault LED is controlled by the fault clock
(FAULT_CLK) and the fault data (FAULT_DATA) control signals.
– The SHELF_OK status signal indicates the state of subsystem
– The SWAP_L signal is asserted whenever an SBB is removed or
– The SBB amber LED displays either the storage address or
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Chapter 1. Product Description
1.3.2 Environmental Monitor Unit (EMU)
The primary function of the EMU (see Figure 1-10) is to monitor, process, report, and
display enclosure and array controller environmental status information for the power
supplies, temperature, blowers, configuration, SCSI addressing, I/O modules,
communications, and the EMU microcode version. The EMU and array controller can
exchange and process this information.
CAUTION
Proper operation of a storage subsystem requires an
operational EMU and PVA in each BA370 rac k mountable
enclosure. You must also establish communications links
between the EMUs to ensure proper subsystem operation
and error reporting.
1.3.2.1 EMU Front Panel
The EMU front panel contains all of the user interface controls, connectors, and displays
(see Figure 1-10 and Table 1-1).
Figure 1–10
Environmental Monitor Unit (EMU)
EMU
COMMUNICATIONS
CONNECTOR
SYSTEM FAULT LED
AND ALARM CONTROL
SWITCH
EMU
MAINTENANCE
CONNECTOR
EMU
COMMUNICATIONS
CONNECTOR
BLOWER
FAULT LED(S)
POWER
STATUS LED
TEMPERATURE
FAULT LED
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