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Printed in the U.S.A.
.
Modular Array Configuration Guide
First Edition (April 2000)
Part Number EK-MACON-CA. A01
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Contents
About This Guide
Text Conventions ................................................................................................... v
Symbols in Text .................................................................................................... vi
Symbols on Equipment.......................................................................................... vi
Rack Stability....................................................................................................... vii
Getting Help......................................................................................................... vii
Compaq Technical Support............................................................................ vii
Modular Building Blocks................................................................................. 4
Configuration using a 41U Modular Storage Cabinet........................................ 6
Configuration using a 42U Modular Storage Cabinet........................................ 7
Configuration using a 36U Modular Storage Cabinet........................................ 8
Configuration using a 22U Modular Storage Cabinet........................................ 9
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This guide is designed to be used as a reference for modular configurations.
Text Conventions
This document uses the following conventions to distinguish elements of text:
Keys
USER INPUTUser input appears in a different typeface and in
FILENAMESFile names appear in uppercase italics.
About This Guide
Keys appear in boldface. A plus sign (+) between
two keys indicates that they should be pressed
simultaneously.
uppercase.
Menu Options,
Command Names,
Dialog Box Names
COMMANDS,
DIRECTORY NAMES,
and DRIVE NAMES
Type
EnterWhen you are instructed to enter information, type
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These elements appear in initial capital letters.
These elements appear in uppercase.
When you are instructed to type information, type
the information without pressing the Enter key.
the information and then press the Enter key.
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vi Modular Array Configuration Guide
Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
IMPORTANT: Text set off in this manner presents clarifying information or specific
instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or interesting points
of information.
Symbols on Equipment
WARNING: Text set off in this manner indicates that failure to follow directions
in the warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions
could result in damage to equipment or loss of information.
These icons may be located on equipment in areas where hazardous conditions
may exist.
Any surface or area of the equipment marked with these symbols
indicates the presence of electrical shock hazards. Enclosed area
contains no operator serviceable parts.
WARNING: To reduce the risk of injury from electrical shock hazards,
do not open this enclosure.
Any RJ-45 receptacle marked with these symbols indicates a Network
Interface Connection.
WARNING: To reduce the risk of electrical shock, fire, or damage to
the equipment, do not plug telephone or telecommunications
connectors into this receptacle.
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Rack Stability
About This Guide vii
Any surface or area of the equipment marked with these symbols
indicates the presence of a hot surface or hot component. If this
surface is contacted, the potential for injury exists.
WARNING: To reduce the risk of injury from a hot component, allow
the surface to cool before touching.
Power Supplies or Systems marked with these symbols
indicate the equipment is supplied by multiple sources of
power.
WARNING: To reduce the risk of injury from electrical shock,
remove all power cords to completely disconnect power from
the system.
WARNING: To reduce the risk of personal injury or damage to the equipment,
be sure that:
■ The leveling jacks are extended to the floor.
■ The full weight of the rack rests on the leveling jacks.
■ The stabilizing feet are attached to the rack if it is a single rack installation.
■ The racks are coupled together in multiple rack installations.
■ A rack may become unstable if more than one component is extended for
any reason. Extend only one component at a time.
Getting Help
If you have a problem and have exhausted the information in this guide, you
can get further information and other help in the following locations.
Compaq Technical Support
You are entitled to free hardware technical telephone support for your product
for as long you own the product. A technical support specialist will help you
diagnose the problem or guide you to the next step in the warranty process.
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viii Modular Array Configuration Guide
In North America, call the Compaq Technical Phone Support Center at
1-800-OK-COMPAQ
Outside North America, call the nearest Compaq Technical Support Phone
Center. Telephone numbers for world wide Technical Support Centers are
listed on the Compaq website. Access the Compaq website by logging on to
the Internet at http://www.compaq.com.
Be sure to have the following information available before you call Compaq:
■ Technical support registration number (if applicable)
■ Product serial number (s)
■ Product model name(s) and numbers(s)
■ Applicable error messages
■ Add-on boards or hardware
■ Third-party hardware or software
■ Operating system type and revision level
■ Detailed, specific questions
Compaq Website
The Compaq website has the latest information on this product. You can
access the Compaq website by logging on to the Internet at
http://www.compaq.com.
1
. This service is available 24 hours a day, 7 days a week.
Compaq Authorized Reseller
For the name of your nearest Compaq Authorized Reseller:
■ In the United States, call 1-800-345-1518.
■ In Canada, call 1-800-263-5868.
■ Elsewhere, see the Compaq website for locations and telephone
numbers.
1
For continuous quality improvement, calls may be recorded or monitored.
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Modular Array Configuration Guide
Introduction
The purpose of this configuration guide is to list the components that have
been qualified in and can be installed in RETMA cabinets. The predefined and
Configure-To-Order solutions are assembled in the Modular Storage Cabinets.
These cabinets include Power Distribution Units and are pre-cabled.
The Series 9000 cabinets are available in three heights: 42U, 36U and 22U.
The top gun blue RETMA cabinet is available in a 41U height.
Single-Bus Mode or Dual-Bus Mode
The HSG80 controller firmware (ACS 8.5) can address up to 12 drives per
UltraSCSI bus. In single-bus mode this means that 12 of the 14 drive bays are
used. The 2 extra drive bays can be used for in-cabinet inventory. In dual-bus
mode the firmware can see seven drives on each bus allowing use of all 14
drives.
The Model 4214R disk enclosure is a single-bus enclosure that has slots for 14
drives. It supports 12 drives in single bus mode. It does not support daisy
chaining between shelves.
The Model 4254 is a dual-bus enclosure that has slots for 14 drives. It supports
seven drives per bus, for a total of 14 drives.
Table 1 describes the advantages and disadvantages between single-bus and
dual-bus mode.
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2 Modular Array Configuration Guide
ModeAdvantagesDisadvantages
Table 1
Single-Bus and Dual-Bus Modes
Single Bus
Dual Bus
Greater disk capacity per
controller channel.
Shelf failure only effects one
channel.
Fewer drives per channel may
increase performance.
Half the rack space consumed
versus single bus shelves
allows greater disk and
controller capacity per cabinet.
More drives per channel can
degrade performance.
Doubles rack space consumed
versus dual bus shelves.
Less disk capacity per controller
channel.
Shelf failure effects two channels
possibly causing RAIDset failure.
The maximum number of drives behind an HSG80 (single or cooperating pair)
using six single-bus Model 4214 disk enclosures is 72.
The maximum number of drives behind an HSG80 (single or cooperating pair)
using three dual-bus Model 4254 disk enclosures is 42.
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Rack Configurations
Figure 1 shows an example of the cabinets.
Modular Array Configuration Guide 3
Figure 1. Example of the 42U, 36U, and 22U cabinets
Table 2 lists the height of the various components that can be installed in the
cabinets.
Table 2
Component Height
ComponentHeight
Model 2200 controller enclosure4U
Model 4214 disk enclosure3U
Model 4254 disk enclosure3U
Compaq StorageWorks SAN Switch 81U
Compaq StorageWorks SAN Switch 162U
Fibre Channel Hub, 7-port
(2 hubs can be mounted side-by side)
Fibre Channel Hub, 12-port1U
1U
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4 Modular Array Configuration Guide
Modular Building Blocks
A Model 2200 controller enclosure can support up to six Model 4214R disk
enclosures or three Model 4254 disk enclosures.
A typical building block using Model 4214R disk enclosures (single-bus)
consists of one Model 2200 controller enclosure with one to six Model 4214R
disk enclosures. Typically, when more than three disk enclosures are used, the
first three would be installed under the Model 2200 controller enclosure, the
next three would be installed on top of the controller enclosure (see Figure 2).
Figure 2. Examples of modular building blocks using Model 4214R disk
enclosures (single-bus)
1
One Model 2200 controller
enclosure and one Model
4214R disk enclosure
2
One Model 2200 controller
enclosure and two Model
4214R disk enclosures
3
One Model 2200 controller
enclosure and three Model
4214R disk enclosures
4
One Model 2200 controller
enclosure and four Model
4214R disk enclosures
5
One Model 2200 controller
enclosure and five Model
4214R disk enclosures
6
One Model 2200 controller
enclosure and six Model
4214R disk enclosures
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Modular Array Configuration Guide 5
A typical building block using Model 4254 disk enclosures (dual-bus) consists
of one Model 2200 controller enclosure with three Model 4254 disk enclosures
(see Figure 3). The Model 4214R can also be configured in this manner.
NOTE: If a Model 4214R disk enclosure is configured in this manner, only three of the I/O
ports are being used.
Figure 3. Examples of modular building blocks using either the Model 4214R
(single-bus) or Model 4254 (dual-bus) disk enclosures
1
One Model 2200 controller
enclosure and three Model
4214R disk enclosures
2
Two Model 2200 controller
enclosure and six Model
4214R disk enclosures
3
Three Model 2200 controller
enclosure and nine Model
4214R disk enclosures
or
One Model 2200 controller
enclosure and three Model
4254 disk enclosures
orTwo Model 2200 controller
enclosure and six Model 4254
disk enclosures
or
Three Model 2200 controller
enclosure and nine Model
4254 disk enclosures
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6 Modular Array Configuration Guide
Configuration using a 41U Modular Storage
Cabinet
The 41U modular storage cabinet supports the following configurations:
NOTE: The following lists what the maximum number of each component that can be
installed in a 41U cabinet. The total number of components that will physically fit into the
41U cabinet is limited by the amount of space. See Table 2 for individual component
height.
■ No more than two Model 2200 controller enclosure shelves (each
controller enclosure can contain a maximum of two HSG80 controllers)
(DS-SE2ZS-C8 / 135820-B21)
■ No more than six Model 4214R disk enclosure shelves
(DS-SSL14-RS / 103381-001)
or six Model 4254 disk enclosure shelves
(DS-SSL14-RM / 103381-001)
■ No more than two Compaq StorageWorks SAN Switch 8
(DS-DSGGB-AA / 158222-B21)
■ No more than two Compaq StorageWorks SAN Switch 16
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Configuration using a 42U Modular Storage
Cabinet
The 42U modular storage cabinet supports the following configurations:
NOTE: The following lists what the maximum number of each component that can be
installed in a 42U cabinet. The total number of components that will physically fit into the
42U cabinet is limited by the amount of space. See Table 2 for individual component
height.
■ No more than three Model 2200 controller enclosure shelves (each
controller enclosure can contain a maximum of two HSG80 controllers)
(DS-SE2ZS-C8 / 135820-B21)
■ No more than nine Model 4214R disk enclosure shelves
(DS-SSL14-RS / 103381-001)
or nine Model 4254 disk enclosure shelves
(DS-SSL14-RM / 103381-001)
■ No more than two Compaq StorageWorks SAN Switch 8
(DS-DSGGB-AA / 158222-B21)
■ No more than two Compaq StorageWorks SAN Switch 16
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8 Modular Array Configuration Guide
Configuration using a 36U Modular Storage
Cabinet
The 36U modular storage cabinet supports the following configurations:
NOTE: The following lists what the maximum number of each component that can be
installed in a 36U cabinet. The total number of components that will physically fit into the
36U cabinet is limited by the amount of space. See Table 2 for individual component
height.
■ No more than two Model 2200 controller enclosure shelves (each
controller enclosure can contain a maximum of two HSG80 controllers)
(DS-SE2ZS-C8 / 135820-B21)
■ No more than six Model 4214R disk enclosure shelves
(DS-SSL14-RS / 103381-001)
or six Model 4254 disk enclosure shelves
(DS-SSL14-RM / 103381-001)
■ No more than two Compaq StorageWorks SAN Switch 8
(DS-DSGGB-AA / 158222-B21)
■ No more than two Compaq StorageWorks SAN Switch 16
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Configuration using a 22U Modular Storage
Cabinet
The 22U modular storage cabinet supports the following configurations:
NOTE: The following lists what the maximum number of each component that can be
installed in a 22U cabinet. The total number of components that will physically fit into the
22U cabinet is limited by the amount of space. See Table 2 for individual component
height.
■ No more than two Model 2200 controller enclosure shelves (each
controller enclosure can contain a maximum of two HSG80 controllers)
(DS-SE2ZS-C8 / 135820-B21)
■ No more than six Model 4214R disk enclosure shelves
(DS-SSL14-RS / 103381-001)
or six Model 4254 disk enclosure shelves
(DS-SSL14-RM / 103381-001)
■ No more than two Compaq StorageWorks SAN Switch 8
(DS-DSGGB-AA / 158222-B21)
■ No more than two Compaq StorageWorks SAN Switch 16