ATTO Technology Diamond Storage Array VT-Class User manual

Diamond Storage Array
VT-Class
Installation and Operation Manual
© 2005 ATTO Technology Inc. All rights reserved. All brand or product names are trademarks of their
respective holders. No part of this manual may be reproduced in any form or by any means without the
express written permission of ATTO Technology Inc.
2/05 6.4 PRMA-0341-000

ATTO Technology Inc.
Contents
Preface
1.0 Diamond Storage Array-VT Product Overview .............................1
Diamond-VT features
Fibre Channel model
SCSI model
2.0 Diamond-VT Technical Overview ...................................................3
ADXT Powers ATA to New Levels
3.0 Installation Instructions ..................................................................5
Step 1: physical setup
Step 2a: set up the Ethernet connection
Step 2b: connect to Ethernet
Step 3: set up Virtual Tape configuration
Configuration examples
3.1 Diamond-VT Components ....................................................7
Floor model
Rack mount model
3.2 Diamond-VT Physical Setup ................................................9
Floor Model
Rack Mount
General Instructions
3.2.1 Connecting a Fibre Channel Array ........................11
Autoconfiguration
Manual configuration
3.2.2 Connecting a SCSI Array ........................................13
4.0 Accessing the Diamond-VT ............................................................15
Command Line Interface
ATTO ExpressNAV
In-band SCSI over Fibre Channel
RS-232 port
Ethernet port
SNMP
4.1 In-band CLI Over Fibre Channel ..........................................17
I/O details
4.2 Serial Port Access .................................................................19
4.3 Ethernet Access: Telnet and SNMP Protocols ...................21

Diamond Storage Array Installation and Operation Manual
5.0 ATTO ExpressNAV: Browser-based Interface ..............................23
Browser compatibility
Opening an ExpressNAV session
Navigating ExpressNAV
5.1 ExpressNAV Pages ...............................................................25
Status
Ethernet
SNMP
Serial Port
Fibre Channel
Storage Management
RAID
Clear Data
Logical Units
Partitions
Zoning
Tape Volumes
Tape Drives
Move Medium
Rebuild
Configuration
Advanced
Restart
Help
6.0 CLI: Interface via ASCII-based Commands ...................................27
6.1 Summary of CLI Commands ................................................29
6.2 General Use Commands .......................................................32
FirmwareRestart
Help
RestoreConfiguration
SaveConfiguration
SystemSN
VerboseMode
ZoneCommit
6.3 Ethernet Commands .............................................................33
EthernetSpeed
Exit
FTPPassword
IPAddress
IPDHCP
IPGateway
IPSubnetMask
SNMPTrapAddress
SNMPTraps
SNMPUpdates
Te l ne t Pa s sw o r d
TelnetTimeout
TelnetUsername
TelnetUsername

ATTO Technology Inc.
6.4 Fibre Channel Configuration Commands ...........................35
FcConnMode
FcDataRate
FcFairArb
FcFrameLength
FcFullDuplex
FcHard
FcHardAddress
FcNodeName
FcPortInfo
FcPortList
FcPortName
FcScsiBusyStatus
FcWWName
6.5 Serial Port Configuration Commands .................................37
SerialPortBaudRate
SerialPortEcho
SerialPortHandshake
SerialPortStopBits
6.6 Maintenance Services Commands ......................................38
FcScsiBusyStatus
FirmwareRestart
MaxEnclTempAlrm
MinEnclTempAlrm
ResolveLUNConflicts
RestoreConfiguration
SaveConfiguration
SpeedWrite
Temperature
Zmodem
ZoneRetrieve
6.7 Diagnostic Commands .........................................................39
AudibleAlarm
DiamondModel
DiamondName
DriveCopyStatus
DriveInfo
FcNodeName
FcPortInfo
FcPortList
FcPortName
Help
IdentifyDiamond
Info
LUNInfo
PartitionInfo
PowerAudibleAlarm
RAID5ClearDataStatus
RAIDRebuildStatus
SerialNumber
SledFaultLED
SMARTData
TapeDriveInfo
TapeVolumeInfo

Diamond Storage Array Installation and Operation Manual
Temperature
VirtualDriveInfo
ZoneInfo
ZoneState
6.8 Drive Management Commands ............................................41
ATA D i s k S t a te
AutoRebuild
ClearDiskReservedAreaData
DriveCopy
DriveCopyHalt
DriveCopyResume
DriveCopyStatus
DriveInfo
DriveSledPower
DriveWipe
ECC
IdeTransferRate
IdeWriteCache
InquiryData
LUNInfo
LUNState
MediumType
PartitionInfo
QuickTape
RAID5ClearData
RAID5ClearDataStatus
RAIDInterleave
RAIDHaltRebuild
RAIDManualRebuild
RAIDRebuildState
RAIDRebuildStatus
RAIDResumeRebuild
RebuildPriority
ResolveLUNConflicts
RestoreModePages
SledFaultLED
TapeDriveInfo
TapeVolumeBlockSize
TapeVolumeInfo
TapeWriteProtect
VirtualDriveInfo
ZoneAddDevice
ZoneAddHost
ZoneAddPort
ZoneClearAll
ZoneCommit
ZoneCreate
ZoneDelete
ZoneInfo
ZoneRemoveDevice
ZoneRemoveHost
ZoneRemovePort
ZoneRetrieve
ZoneState

ATTO Technology Inc.
7.0 Configuring the Diamond-VT ..........................................................47
RAID Level 10
RAID Level 5
Virtual Tape Volumes
Hot Spare sleds
Zones
Interleave
Enhancing performance
7.1 Virtual Tape ............................................................................49
Configuration examples
7.2 Optional Hot Spare Sled .......................................................50
7.3 Zones ......................................................................................51
Principles of Zoning
Factors to consider
Status and Sense Data
Configuring Zoning
Errors
8.0 Updating Firmware ..........................................................................55
Updating firmware via the RS-232 serial port
Updating firmware via the optional Ethernet card
9.0 Diagnostics, Upgrade and Maintenance ........................................57
9.1 Troubleshooting ....................................................................61
Windows 2000 special instructions
Error Messages
Command Line Interface messages
Specific situations and suggestions
9.2 Resetting Defaults .................................................................63
Default
Return to Default settings
Factory Default
9.3 Rebuilding RAID Level 5 and 10 Configurations ................65
10.0 Hardware Maintenance ..................................................................67
10.1 Hot Swap Operating Instructions ......................................69
Disk Drives
Power Supplies
Blower Assemblies

Diamond Storage Array Installation and Operation Manual
Appendix A Glossary .............................................................................i
Fibre Channel technology
SAN technology
SCSI protocol
Appendix B ATA Disk Technology .......................................................iii
Appendix C Information Command Returns .......................................iv
Driveinfo
VirtualDriveInfo
Appendix D Sample Zoning Command Sequences ............................ix
Φιρστ τιµε χονφιγυρατιον (αφτερ δοωνλοαδ)
Σιµπλε χονφιγυρατιον
Σψµµετριχ Μοδελ
Ασψµµετριχ Μοδελ
Χοµβινεδ Σψµµετριχ/Ασψµµετριχ Μοδελ
Appendix E Specifications ....................................................................xii
Environmental and physical
Rack Mount Dimensions
Floor Mount Dimensions
Appendix F Product Safety ...................................................................xiii
Safety compliances
EMC specifications
Radio and television interference
Appendix G Part numbers .....................................................................xiv
Appendix H Warranty ............................................................................xv
Manufacturer limited warranty
Contact ATTO Technology, Inc.

Preface
This guide will take the technology-savvy user through the installation and maintenance of the Diamond
Storage Array-VT.
The Diamond-VT was designed to meet your
need for large amounts of easily accessible
storage using proprietary Aggregated Data
Transfer Technology (ADXT J ) to merge the
power of multiple, high performance ATA disk
drives with the sustained data transfer rates
required by sophisticated computer users.
Your comments help us improve and update our
products. Contact us:
ATTO Technology, Inc.
155 CrossPoint Parkway
Amherst, New York 14068
[phone] • voice
[phone] • fax
http://www.attotech.com/diamond
ATTO Technology can also be reached via e-mail
at the following addresses:
Sales Support: sl[email protected]
Technical Support: [e-mail]
Disclaimer
Although reasonable efforts have been made to
assure the accuracy of the information contained
herein, this publication could include technical
inaccuracies or typographical errors.
Manufacturer expressly disclaims liability for any
error in this information and for damages,
whether direct, indirect, special, exemplary,
consequential or otherwise, that may result from
such error including but not limited to loss of
profits resulting from the use or misuse of the
manual or information contained therein (even if
Manufacturer has been advised of the possibility
of such damages). Any questions or comments
regarding this document or its contents should be
addressed to Manufacturer.
Manufacturer provides this publication as is,
without warranty of any kind, either express or
implied, including, but not limited to, the implied
warranties for merchantability or fitness for a
particular purpose.
Information in this publication is subject to
change without notice and does not represent a
commitment on the part of Manufacturer.
Changes may be made periodically to the
information herein; these changes will be
incorporated in new editions of the publication.
Manufacturer reserves the right to make
improvements and/or changes at any time in
product(s) and/or program(s) described in this
publication.

1
ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
1.0 Diamond Storage Array-VT Product Overview
The Diamond Storage Array-VT Class offers up to 30 Virtual Tape drives and up to 60 virtual tapes in
a rack mount or floor model configuration.
The Diamond-VT appears and functions to ISV
(Independent Software Vender) applications as if
it were a traditional tape device although it is
actually an array of ATA disk drives. Virtual tape
provides increased performance for restore and
backup operations, RAID protection of data, and
compatibility with existing software and backup
procedures. Virtual Tape can be used anywhere
traditional tape is used to augment and enhance
existing tape drive/library investments.
With the cost effective approach of using ATA
disk drives, you can add more storage capacity as
your needs grow without the costs of other disk
storage technologies. You can also improve the
performance and capacity of the Diamond-VT
cabinet as technology progresses by simply
replacing disk drive sleds and host interface cards.
The Diamond-VT is operating system
independent and supports all popular computer
hardware platforms and network environments.
Two interface options are available: a 2-gigabit
Fibre Channel interface and an Ultra160 SCSI
interface.
The Diamond-VT is a fully populated, turnkey
solution with drives pre-installed. It is fully
supported by a highly trained customer service
and engineering staff.
The Diamond-VT uses Aggregated Data Transfer
Technology (ADXT
J ) to merge the performance
of multiple ATA drives to achieve sustained, full
bandwidth data transfer rates. ADXT provides
end users with the power and sophisticated data
control needed to take moderately priced ATA
disk drives, combine them in a disk storage array,
and power them to the performance levels of
SCSI or Fibre Channel disk arrays.
Diamond-VT features
• Up to 7.2 Terabytes initial configuration
(expandable with future drive technology)
• Supports most major operating systems and ISV
software applications
• Configurable up to 30 Virtual Tape Drives

2
Diamond overview
• Aggregated Data Transfer Technology
(ADXTJ) for high performance/scalability
• Ultra ATA 100 megahertz (Mhz)
• RAID Level 10 and RAID Level 5 configurable
• Zoning capability compatible with third party
servers, switches and with deliverables from
industry standards organizations.
• Hot spare sleds: replace degraded sleds with
spares on the fly using software
• Staggered drive spin-up to reduce peak power
demand
• Tagged command queuing to process up to 255
simultaneous data requests
• RS-232 management for local management
control; Ethernet option available for setup
connection only
• ExpressNAVTM browser-based user interface
• Two power supplies capable of 85-264 V (rated
100-240V AC) operation (340 watts each)
• UL, TUV and CE marked and compliant
• Internal thermal and power management
• Redundant hot swappable power supplies with
integrated thermal and power management
• Floor model cabinet or 19” 3U rack mount
Fibre Channel model
• 2 gigabit Fibre Channel Port (single or dual
channel)
• SFP-based Fibre Channel interface supports
long wave and short wave optical cables
• Built-in hub for daisy-chaining
• Up to 9,500 I/Os per second per port
• Up to 240 MB/sec. sustained Fibre Channel
transfer rates per interface
SCSI model
• Ultra 160 SCSI bus
• Dual stacked VHDCI connectors for daisy-
chaining and termination
• SCSI Target ID selection switch
• Support for single-ended and LVD SCSI
• No onboard termination
Exhibit 1.0-1Back of rack mount model, Diamond-VT. Left: 2 gigabit Fibre Channel. Right: SCSI.

3
ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
2.0 Diamond-VT Technical Overview
The Diamond-VT uses Aggregated Data Transfer Technology (ADXT) to achieve the high data transfer
performance you need. ADXT
merges the performance of multiple ATA drives together to achieve
sustained, full bandwidth Fibre Channel data transfer rates.
Unlike other storage arrays which use expensive
SCSI or Fibre Channel disk drives to achieve
performance, the Diamond Series uses lower cost
ATA disk drives combined with an intelligent
midplane to create a storage array with
exceptional price and performance
characteristics.
The intelligent midplane contains hardware and
software which provide the proprietary ADXT
, a
switched data management and data movement
technology, to create a higher performance
storage solution.
Using this technology, we are able to provide a
storage array that delivers faster sustained data
transfer rates as well as impressive I/Os per
second at a new price point in the storage market.
The Diamond Array is made up of dual SCSI or
Fibre Channel host interface cards, the intelligent
midplane, a system management card, and 12
independent disk drive sleds containing up to 24
ATA disk drives.
Exhibit 2.0-1 Data pathways and architecture for Fibre Channel operation
Local Terminal
In band management SNMP / Telnet/ FPT Management
software
Intelligent
Midplane
2Gb FC or
Ultra160 SCSI
Host
Dual Disk
DriveSled
Dual Disk
DrivueSled
Dual Disk
DriveSled
Dual Disk
DriveSled
Dual Disk
DriveSled
Dual Disk
DriveSled
Dual Disk
DriveSled
Diual Disk
DriveSled
Dual Disk
DriveSled
Dual Disk
DriveSled
Dual Disk
DriveSled
ADXT
™
organized
data
streams
2Gb FC or
Ultra160
SCSI Host
CPCI bus
CPCI bus
System
Management
Card
400MB/sec
Duplex
400MB/sec
Duplex I/O Data
RS-232
Ethernet
Dual Disk
DriveSled

4
Technical overview
ADXT Powers ATA to New Levels
The original notion of RAID was to build high
capacity, reliable storage subsystems using large
numbers of inexpensive disk drives. Thus its
original definition: Redundant Array of
Inexpensive Drives
. Over time that definition
became
Redundant Array of Independent Drives
and the inherent cost advantage in a RAID system
was lost. The Diamond Series provides a high
capacity, high performance and highly reliable
disk array that uses the merged power of many
inexpensive ATA disk drives.
Intelligent Midplane The heart of the Diamond
Series storage array is the intelligent midplane
with ADXT
to sum or aggregate the data rates of
individual ATA disk drives to create high data
transfer rates. This technology enables features
such as serverless backup, advanced error
protection, metadata storage techniques,
virtualization software, thermal management and
advanced enclosure services.
The midplane contains a combination of custom
Application Specific Integrated Circuits (ASICs),
processors and proprietary embedded software. It
is divided into three main processing sections
which handle the data being read or written to the
ATA disk drives from the Fibre Channel or SCSI
host interfaces. The Virtual Device Manager
(VDM), Data Routing Fabric (DRF) and ATA
Interface Engines (AIE) organize data streams for
storage or retrieval.
Virtual Drive Manager Data is accessed through
Virtual Drives using an implementation of the
standard SCSI protocol controlled by the Virtual
Device Manager. The VDM adds capabilities
such as RAID, data management services,
enclosure management services, serverless
backup, data replication using SCSI Extended
Copy and LUN mapping.
Data Routing Fabric Incoming or outgoing data is
routed between the ATA Interface Engines (AIE)
and the Fibre Channel or SCSI interface by the
custom Data Routing Fabric ASIC, a high speed,
low latency transfer fabric with more than 2
GB/sec. of bandwidth supported by up to 512
Megabytes of memory.
ATA Interface Engine (AIE) The interface to each
pair of drives is through a custom ATA Interface
Engine ASIC. The AIE implements the typically
software-intensive ATA interface completely in
silicon. Each AIE contains a dedicated ATA
protocol processor to completely automate
command and protocol processing. Automated
command overlapping and queuing maximizes
the performance of multi-threaded I/O. The AIE
transfers data using double-clocking technology
at 66 megabytes per second. The Diamond-VT
contains 12 AIEs for a parallel transfer rate of 792
megabytes per second. In
addition to guaranteeing
data transfer integrity with
automatic CRC checking,
the command and status
transfers are validated
using a patent pending
technology unique to the
AIE.
text
Disk 1
Disk 2
AIE 1
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
Disk 1
Disk 2
DATA ROUTING FABRIC
VIRTUAL DEVICE MANAGER
FIBRECHANNEL
INTERFACE 1
FIBRECHANNEL
INTERFACE 2
AIE 2AIE 3AIE 4AIE 5AIE 6AIE 7AIE 8AIE 9AIE 10 AIE 11 AIE 12

5
ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
3.0 Installation Instructions
If you are familiar with the Diamond-VT, Fibre Channel, SCSI and RAID configurations, you may set
up and configure the Diamond-VT using these instructions. Find details, illustrations and other
guidance for more involved operations and special cases in the rest of this manual.
CAUTIONCAUTION
Before configuring the Diamond-VT,
ensure that any computer data to be stored
on the array is properly backed up and
verified. The operation and storage of
computer data on any disk storage array
should be accompanied by a regular
program of computer data backups and
verification for the data stored on such an
array.
The Manufacturer is not responsible for the
loss of any data stored on the Diamond-VT
under any circumstances and any special,
incidental, or consequential damages that
may result thereof.
Three major steps are required to set up the
Diamond-VT
1 Physically set up Diamond-VT
2 Connect to Ethernet
3 Configure Virtual Tape
Step 1: physical setup
1 Make sure the Diamond-VT is mounted
properly and has adequate air flow around it.
2 Insert the appropriate connector into the
interface card in the back of the Diamond-VT.
3 Connect the Fibre Channel or SCSI cable from
your host computer system to the connector. To
use ExpressNAV browser-based management
interface and configure your Diamond-VT, you
must connect to the Ethernet port.
4 To set up the Ethernet connection: connect a
cross-over cable (for a direct connection to a
PC) or regular network cable from a network
device to the RJ45 Ethernet port on the
Ethernet management card on the front of the
Diamond-VT.
Step 2a: set up the Ethernet connection
The Diamond-VT supports service operations
over the RS-232 serial port using standard
terminal emulation software available with most
systems.
1 Connect a DB-9 null modem serial cable
between the port marked RS-232 on the front of
the Diamond-VT and the computer’s serial port.
The cable must be no longer than three meters.
2 Make sure the power switches on the power
supplies on the rear of the unit are in the Stand-
by position.
3 Plug in the power cords to the back of the unit,
then into an appropriate power source (100-240
VAC).
4 Reboot your host computer system.
5 Press the Stand-by power switch for each
power supply on the Diamond-VT to the ON
position.
6 Upon successful power up and diagnostics, the
unit displays the POST (power up self test)
information.
The Diamond is now in Command Line Interface
mode. You may modify the setup of the Diamond-
VT using the CLI (see
CLI: Interface via ASCII-based
Commands
on page 27), but the easiest method to
configure the array is by using ATTO
ExpressNAV software, a graphical user
management interface accessed through a
standard Internet browser. See
ATTO ExpressNAV:
Browser-based Interface
on page 23.
Step 2b: connect to Ethernet
If the Diamond-VT is attached to a DHCP server
1AttheReady prompt after POST (see Step 6
above), type set IPDHCP enabled
2TypeSaveConfiguration Restart
3AttheReady prompt after POST (see above),
type get IPAddress
4 Enter this address into your browser.
5 The ATTO ExpressNAV screen appears. Log in
using the Telnet defaults:
Username: Telnet
Password: Diamond

6
Installation
6 Follow the screens to find information about the
array or to configure the array from the factory-
default settings. The Diamond-VT may be set
up in a RAID Level 5 or RAID Level 10
configuration with or without Hot Spare sleds
and/or set up in a zoned configuration.
If the Diamond-VT is not attached to a DHCP
server and you wish to change the defaults
1 At the Ready prompt after POST (see above),
type set IPAddress [desired IP address].
2Typeset IPSubnetMask [desired IP Subnet
Mask]
3Typeset IPGateway [desired IP Gateway]
4TypeSaveConfiguration Restart to save the
configuration and restart the Diamond-VT
5 After the powerup and POST complete, type
the IP address from step 1 above into your
browser.
6 The ATTO ExpressNAV screen appears. After
logging in (refer to Step 2b: connect to
Ethernet, Step 5 on page 5), follow the screens
to find information about the array or to
configure the array from the factory-default
settings. The Diamond-VT may be set up in a
RAID Level 5 or RAID Level 10 configuration
with or without Hot Spare sleds and/or set up in
a zoned configuration.
Step 3: set up Virtual Tape configuration
The simplest way to set up Virtual Tape
configurations is to use the ExpressNAV
interface. Refer to
ATTO ExpressNAV: Browser-based
Interface
on page 23 for more information on the
interface. After logging in (refer to
Step 2b:
connect to Ethernet
, Step 5 on page 5 ), follow the
screens to find information about the array or to
configure the array from the factory-default
settings .
If you use the CLI, the command QuickTape ™
sets up Virtual Tapes using the following format:
set QuickTape [RAID5|RAID10] [# tape
volumes] [# tape drives] <enabled>
<Barcode Prefix>
Hot Spares are not available for all Virtual Tape
configurations. You must designate
enabled to
allow Hot Spare sleds or disabled to forgo Hot
Spare sleds. Refer to and
Optional Hot Spare Sled on
page 50 for more information and examples.
Each Hot Spare sled configuration requires a
certain number of Hot Spare sleds. These sleds,
once designated as Hot Spares, are not available
for other use.
• RAID Level 10: 10 drive sleds and two Hot Spare
sleds (sleds 11 and 12).
• RAID Level 5: 10 drive sleds and two Hot Spare
sleds (sleds 11 and 12)
• RAID Level 5: five drive sleds (sled positions 1
through 5) and one Hot Spare sled (sled 12).
You may specify the first four to six alpha-
numeric characters of a tape bar code, used by
tape backup software. The remaining four
characters will be entered by the system
automatically to identify the tape number. Refer
to
Virtual Tape on page 49 for more information and
examples.
Note
The maximum number of tape volumes and
tape drives for RAID Level 5 is 30.
The maximum number of tape volumes and
tape drives for RAID Level 10 is 15.
You must designate either enabled or disabled
for the Hot Spare option when designated a
barcode prefix.
All arrays using RAID level 10 and Hot Spare
sled options must be fully populated.
Configuration examples
RAID Level 10 with Hot Spare sleds
set QuickTape RAID10 15 1 enabled
SaveConfiguration Restart
The Diamond-VT will be configured into RAID
Level 10 with one tape drive, 15 tape volumes and
two Hot Spare sleds.
RAID Level 5 and no Hot Spare sled
set QuickTape RAID5 30 2
SaveConfiguration Restart
The Diamond-VT will be configured into RAID
Level 5 with two tape drives and 30 tape
volumes.

7
ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
3.1 Diamond-VT Components
The Diamond-VT has been designed to be easy to use, maintain and upgrade. It features a durable steel
outer case and modular components in either a floor or a rack mount model.
Immediately upon receipt, check the shipping
carton for damage from mishandling. Contact us
at once via the means that is easiest for you (see
Warranty on page A-xv) if the carton has been
mishandled or displays any signs of damage.
The front of the Diamond-VT provides access to
the management card and disk drive sleds. The
rear of the unit holds the host interface cards,
power supplies and blower assemblies.
CAUTIONCAUTION
All modular components must be replaced
by qualified personnel only. Refer to
Hot
Swap Operating Instructions
on page 69.
Floor model
The management system card is at the top front of
the case. At its center is a DB-9 serial RS-232
port, a connection for setup, monitoring and
upgrade of the unit from any computer system
with an RS-232 interface. The optional 10/100
BaseT Ethernet management services card
enables Telnet-based monitoring and
management. It also provides the ability to update
the firmware in the array via FTP.
LEDs to the port’s right indicate fault, unit ready,
host interface cards A and B installation status,
and the power status for each power supply.
Below the
management
system card are
individual disk
drive sleds
which also have
LEDs for each
drive’s status.
Each sled
contains two
hard drives. Up
to 24 hard
drives may be
installed on the
12 sleds. Empty
bays should be
covered by
blank faceplates
or empty sleds. Access is provided by loosening
two screws and gently pulling on the sled handle.
On the rear of the unit are blowers which support
hard drive, cabinet and power supply cooling. The
blowers are held in by removable screws. Correct
operation is displayed by a LED at the top of each
panel.
The power supplies for the Diamond-VT, also in
the rear of the unit, are accessible by loosening
two screws and pulling on the power supply
module handle. The power standby on/off switch
is at the top of each module. A yellow LED
indicates caution and a green LED indicates on .
The power cord socket is at the bottom of each
power supply.
Between the power supplies and blower
assemblies are two slots that hold the Host
Interface cards. The HIC is the connection point
into the Diamond-VT and is available in a 2-
Gigabit Fibre Channel or Ultra 160 SCSI. Host
Interface cards have
fault and on-line or fault and
activity LED indicators, depending on the model.
SCSI The SCSI card faceplate has a rotary
binary-coded hex switch to set the SCSI ID of the
Diamond-VT. The SCSI card also has an in
channel, to connect via cable to the unit’s
communication source, and an out channel,
available for daisy-chaining arrays together or to
complete termination using an external LVD
terminator.

8
Components
Rack mount model
The system management card
is at the left front of the case.
At its center is a DB-9 serial
RS-232 port which allows a
connection for setup,
monitoring and upgrade of the
unit from any computer
system with an RS-232
interface. The optional 10/100
BaseT Ethernet management
services card enables Telnet-
based monitoring and
management. It also provides
the ability to update the
firmware in the array via FTP.
LEDs farthest to the left
indicate fault, unit ready, Host
Interface cards A and B
installation status, and the
power status for each power
supply.
To the right of the system
management card are
individual disk drive sleds
which also have LED
indicators for each drive’s
status. Each sled contains two hard drives. Up to
24 hard drives may be installed on the 12 sleds.
Empty bays should be covered by blank
faceplates or filled with empty sleds to promote
effective cooling. Access is provided by
loosening two screws and pulling on the sled
handle.
In the rear of the unit are the blower assemblies
which support hard drive, cabinet and power
supply cooling. Correct operation is displayed by
a LED at the top of each panel. The blowers are
held in place by removable screws.
The power supplies for the Diamond-VT are
accessible by loosening two screws and pulling on
the power supply module handle. The power
standby on/off switch is at the top of each module.
A yellow LED indicates
caution and a green LED
indicates
on . The power cord socket is at the
bottom of each power supply.
Between the power supplies and blower
assemblies are two slots that hold the Host
Interface cards. The HIC is the connection point
into the Diamond-VT and is available in a 2-
Gigabit Fibre Channel, or Ultra 160 SCSI. Host
Interface cards have
fault and on-line or fault and
activity LED indicators, depending on the model.
SCSI The SCSI card faceplate has a rotary
binary-coded hex switch which allows you to set
the SCSI ID of the Diamond-VT. The SCSI card
also has an in channel, to connect by a cable to the
unit’s communication source, and an out channel,
available for daisy-chaining arrays together or to
complete termination using an external LVD
terminator.
Intelligent midplane (internal)
Disk drive sleds (12)
System Management Card
Power supplies Host interface cards
Blower assemblies

9
ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
3.2 Diamond-VT Physical Setup
The Diamond-VT is shipped completely assembled with two 120 VAC power cords for use in the United
States and Canada.
Immediately upon receipt, check the shipping
carton for damage from mishandling. Contact us
at once by the means easiest for you (see
Warranty
on page A-xv) if the carton has been mishandled
or displays any signs of damage.
Floor Model
The Diamond-VT is heavy (about 92 pounds fully
loaded) and requires two people to lift and carry it
safely. Place the Diamond-VT on a level surface
and make sure there is adequate space in the front
and back of the unit for proper cooling and
airflow. Continue with the general instructions.
Rack Mount
The Diamond-VT fully loaded is heavy (about 86
pounds). The unit should be handled with care and
requires two people to lift, carry and/or install it
safely.
The Diamond Array can be mounted via several
different methods in a 19” rack with 3U (5.25”) of
vertical space required. Air flow should not be
restricted in any way.
Installation in a rack may create a differential
between the room ambient temperature and the
internal ambient temperature in the rack. While
the maximum internal operating temperature of
the Diamond-VT is 47°C, you should not run the
system at the maximum temperature for extended
periods. Therefore, ensure that the room ambient
temperature is kept below 30°C for best
operation.
Each side of the rack mount Diamond-VT chassis
has three pairs of mounting holes. One is located
near the front of the rack, one near the unit’s
center of gravity, and one near the rear of the rack.
The holes accommodate 10/32 screws but the
screws can protrude no farther than .375 inches
into the rack.
Spaced rail pairs in some rackmount cabinets.
You can mount the Diamond-VT using two sets of
rail pairs spaced to accommodate the overall
length of the unit (approximately 23 inches).
Mount using the rack mount brackets on the front
and rear of the unit fastened to the rail pairs using
10/32 pan head screws with lock and flat washers.
Rack mount cabinets with stationary shelf or tray
system.
The shelf or tray must be able to support
at least 125 pounds. The shelf or tray must be
installed and secured to the rack before installing
the Diamond-VT. Secure the front of the array to
the rack with 10/32 screws, locks and flat
washers.
Sliding shelf or tray type systems should never
be used under any circumstances.
Two point open rack system. The rack must be
strong enough to support the Diamond Array
properly. Mounting brackets should be moved to
the centermost mounting holes and secured using
10/32 screws.
CAUTIONCAUTION
Do not mount multiple Diamond-VT units
on a two-rail rack or mount the array above
the midpoint of a two-rail rack system.
Do not mount the Diamond-VT on any kind
of rail-type system. The array is too heavy
and does not have the proper hole pattern
for rails.
Insure the Diamond-VT has adequate air flow and
continue with the general instructions.