Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem User manual

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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
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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.
EK–SMCPQ–UG. C01 v
Contents
Revision Record ............................................................................................................................ vii
About This Guide ..........................................................................................................................ix
1 Product Overview
1.1 Product Description ...........................................................................................................1–1
1.2 Shelf Features.....................................................................................................................1–5
1.3 Controller Shelf Enclosure................................................................................................1–5
1.4 Shelf Cabinet Installation..................................................................................................1–7
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
2.1 Controller Overview ..........................................................................................................2–1
2.2 Controller Features.............................................................................................................2–3
2.3 Controller Reset and LED Indicators ...............................................................................2–5
2.4 Flexible RAID Set Configuration.....................................................................................2–6
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
2.6.2 RAID 1....................................................................................................................... 2–11
RAID Array 3000 Controller Shelf
vi EK–SMCPQ–UG. C01
2 RAID Array Controller (continued)
2.6.3 RAID 0+1...................................................................................................................2–11
2.6.4 RAID 4 .......................................................................................................................2–13
2.6.5 RAID 5 .......................................................................................................................2–14
2.6.6 JBOD..........................................................................................................................2–16
2.7 System Parameters...........................................................................................................2–16
2.8 Redundant Operation.......................................................................................................2–16
2.8.1 Initialization...............................................................................................................2–17
2.8.2 Message Passing........................................................................................................2–17
2.8.3 Failover ......................................................................................................................2–17
2.9 Environmental..................................................................................................................2–18
2.9.1 Backup Power Management.....................................................................................2–18
3 Installation and Maintenance
3.1 Installation Guidelines ......................................................................................................3–1
3.2 Installing Shelves in the Cabinet......................................................................................3–2
3.2.1 Installing Shelf Supports............................................................................................3–7
3.2.2 Installing UPS Brackets..............................................................................................3–9
3.3 Power and SCSI Cable Connection Procedures............................................................3–13
3.3.1 SCSI Bus Target Addresses and Termination ........................................................3–14
3.3.2 Cabling a Single Device Expansion Shelf Subsystem...........................................3–15
3.3.3 Cabling a Two Device Expansion Shelf Subsystem ..............................................3–18
3.3.4 Cabling a Three Device Expansion Shelf Subsystem............................................3–21
3.3.5 Cabling a Four Device Expansion Shelf Subsystem..............................................3–24
3.4 Controller Shelf Status LEDs .........................................................................................3–27
3.5 Controller LEDs...............................................................................................................3–28
3.6 Replacing Components (FRU’s) ....................................................................................3–28
3.6.1 Replacing a Host or Device I/O SBB......................................................................3–30
3.6.2 Replacing a Power Supply SBB...............................................................................3–31
3.6.3 Replacing the RAID Controller ...............................................................................3–32
3.6.4 Replacing the UPS ....................................................................................................3–33
3.6.5 Replacing a Blower...................................................................................................3–33
3.6.6 Replacing the Controller Memory Cache Modules ...............................................3–35
4 Second Controller Option
4.1 Introduction........................................................................................................................4–1
4.2 Install Firmware Upgrade .................................................................................................4–2
4.2.2 Save Existing Configuration ......................................................................................4–3
4.2.3 Install Two SIMMs.....................................................................................................4–5
4.3 Install New Controller.......................................................................................................4–6
4.3.1 Restoring Configuration.............................................................................................4–7
4.4 Configuring a Dual Controller Installation for a Single Serial Port..............................4–9
Contents
EK–SMCPQ–UG. C01 vii
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
RAID Array 3000 Controller Shelf
viii EK–SMCPQ–UG. C01
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 .........................................................................................................2–12
2–5 Response to Various AC Power Conditions..................................................................2–18
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
EK–SMCPQ–UG. C01 ix
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
shelf support installation
procedures.
EK–SMCPQ–UG. C01 July 1999 Adds Shelf-to-Host
connection diagrams to
Chapter 1 and dual
controller configuration
procedure to Chapter 4.
EK–SMCPQ–UG. C01 xi
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.
RAID Array 3000 Controller Shelf
EK–SMCPQ–UG. C01
xii
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 Order Number
StorageWorks RAID Array 3000 Configuration and
Maintenance Guide
EK–SMCS2–UG
7 Device, 16-Bit SBB Shelf (BA356-S Series) User’s Guide EK-BA356-UG
StorageWorks SBB Shelf I/O Modules Users Guide EK-SBBIO-UG
RAID Array 3000 Getting Started for Windows NT-Intel
Installation Guide
AA-RACZA-TE
RAID Array 3000 Getting Started for Windows NT-Alpha
Installation Guide
AA-RACUA-TE
RAID Array 3000 Storage Subsystem Second Controller
Option Installation Guide
EK-SM3KC-IG
Command Console 2.1 for RAID Array 3000, User’s Guide AA-RBF2B-TE
RETMA Shelf Rail Kit Installation Guide EK-35XRB-IG
RETMA Bracket Installation Guide ER-PCBAR-AA
About This Guide
EK–SMCPQ–UG. C01
xiii
Conventions
This guide uses the following documentation conventions:
Table 2 Style Conventions
Style Meaning
plain monospace type Text
boldface type
For the first instance of terms being defined in
text, or both.
italic type For emphasis, manual titles, chapter
summaries, keyboard key names
.
Table 3 Nomenclature Convention
RAID Advisory Board Description RAID Array 3000 Usage
RAID 0 STRIPset
RAID 1 MIRRORset
RAID 0+1 STRIPED MIRRORset
RAID 4 STRIPED with a Fixed parity drive
RAID 5 STRIPED with a Floating parity drive
RAID Array 3000 Controller Shelf
EK–SMCPQ–UG. C01
xiv
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
EK–SMCPQ–UG. C01 1–1
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 Com-
mand Console (SWCC) 2.1 User’s Guide.
1.1 Product Description
The RAID Array 3000 Controller Shelf (Figure 1–1) is a rackmount storage sys-
tem 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 mini-
mum 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.
RAID Array 3000 Controller Shelf
1–2 EK–SMCPQ–UG. C01
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 mini-
mum revision level of H01 or higher.
The Controller Shelf and the accompanying Device Expansion Shelves are in-
stalled 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
S
HR-1
0
3
4
Chapter 1. Product Overview
EK–SMCPQ–UG. C01 1–3
Figure 1–2 RAID Array 3000 6-Slot Device Expansion Shelf (Optional)
S
HR-1
0
9
1
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.
RAID Array 3000 Controller Shelf
1–4 EK–SMCPQ–UG. C01
Table 1–1 Controller Shelf Part Numbers and Model Descriptions
DIGITAL Part No. Item Description
DS-SWXRA-GH 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, differen-
tial, 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.
DS-SWXRA-GK 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.
DS-SWXRA-GN 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.
DS-HSZ22-AA RA3000 Second Controller Option which includes:
DS-HSZ22-AA SCSI controller, three 16-MB SIMM mod-
ules, 0.8 m adapter-to-SCSI-3 cable, 5 m SCSI cable, 9-
pin serial cable, user documentation
Chapter 1. Product Overview
EK–SMCPQ–UG. C01 1–5
1.2 Shelf Features
The RAID 3000 Controller Shelf is equipped with a dual-channel RAID control-
ler 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
1.3 Controller 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 inter-
face 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 al-
lows the operator to turn off the audible alarm if desired.
RAID Array 3000 Controller Shelf
1–6 EK–SMCPQ–UG. C01
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 ad-
jacent 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
SH R-10 51
DC Power
Supplies
Blowers
RAID
Co ntroller
Host 0
I/O Module
Host 1
I/O Module
Blank
Panel
Device I/O
Module
Chapter 1. Product Overview
EK–SMCPQ–UG. C01 1–7
1.4 Shelf 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 cabi-
net 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.
1.5 Shelf Major Components
The major components in the controller shelf (see Figure 1–3) include:
Dual-channel RAID array controller (a second redundant controller is op-
tional)
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
S
HR-1
0
4
8
Cache Memor
y
Modules
RAID Array 3000 Controller Shelf
1–8 EK–SMCPQ–UG. C01
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 sin-
gle 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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Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem User manual

Category
Notebooks
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User manual
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