ATTO Technology V-Class User Manual
87
ATTO Technology Inc. Diamond Storage Array Installation and Operation Manual
9.1 Hot Swap Operating Instructions
To maintain array up time, individual disk drive sled assemblies, power supplies and blower assemblies
can be replaced with the unit fully operational. Special instructions need to be followed to perform these
operations.
can be replaced with the unit fully operational. Special instructions need to be followed to perform these
operations.
Disk Drives
CAUTION
CAUTION
Individual disk drive sled assemblies may be
replaced while the array is operating with no other
intervention only if there is absolutely no activity
on that drive. Failure to ensure no activity may
destroy any data on that drive and possibly stop
the entire Diamond Storage Array operation.
replaced while the array is operating with no other
intervention only if there is absolutely no activity
on that drive. Failure to ensure no activity may
destroy any data on that drive and possibly stop
the entire Diamond Storage Array operation.
Follow the instructions below to replace drives.
Removing a drive sled that is part of a RAID Level
0 group results in the loss of all data in the groups
associated with that sled. Follow your backup
procedures when removing sleds.
0 group results in the loss of all data in the groups
associated with that sled. Follow your backup
procedures when removing sleds.
Do not leave empty openings on the front or rear
of the array under any circumstances. Empty
openings may cause the unit to overheat.
of the array under any circumstances. Empty
openings may cause the unit to overheat.
WARNING
All modular components must be replaced by
qualified personnel only. Components are
electrostatic sensitive. Use a static wriststrap
when handling any of the cards inside the array.
Use proper grounding methods. Always store
spare components in proper ESD containers.
qualified personnel only. Components are
electrostatic sensitive. Use a static wriststrap
when handling any of the cards inside the array.
Use proper grounding methods. Always store
spare components in proper ESD containers.
Follow your backup procedures before removing a
sled. You may copy drives using the appropriate CLI
commands (refer to Drive Configuration Commands on
page 43).
sled. You may copy drives using the appropriate CLI
commands (refer to Drive Configuration Commands on
page 43).
The following method is the safest way to
perform a hot swap of a drive
perform a hot swap of a drive
The general approach: identify the disk drive sled to be
replaced, take it offline using the appropriate CLI
commands, turn off its power using CLI commands,
remove and replace with a new disk drive sled, power
up the new sled, and place back on line.
replaced, take it offline using the appropriate CLI
commands, turn off its power using CLI commands,
remove and replace with a new disk drive sled, power
up the new sled, and place back on line.
1
Connect to Diamond Storage Array services
(refer to
(refer to
Accessing the Array
on page 17) and
enter the CLI.
2
The fault LED should blink on the disk drive
sled which requires replacement. If it is not,
sled which requires replacement. If it is not,
type
set SledFaultLED [n] on. The LED of the
drive you want [n] lights.
3
Determine the Drive Sled Number. The disk
drive sled closest to the management card is
always the number 1 disk drive sled
drive sled closest to the management card is
always the number 1 disk drive sled
4
Take the disk drive sled offline by entering the
following CLI commands at the control
computer
following CLI commands at the control
computer
Ready prompt:
Set AtaDiskState (SledNum, 1, OFFLINE)
Set AtaDiskState (SledNum, 2, OFFLINE)
Set DriveSledPower (SledNum, OFF)
CAUTION
CAUTION
In a Hot Spare configuration, a drive sled should
only be taken offline if there is absolutely no
activity on that drive. If there is any activity, the
rebuild of the Hot Spare sled may be flawed.
only be taken offline if there is absolutely no
activity on that drive. If there is any activity, the
rebuild of the Hot Spare sled may be flawed.
5
Wait 30 seconds for the disk drive sled to spin
down and complete any remaining I/O activity.
down and complete any remaining I/O activity.
6
Unscrew the two screws on the disk drive sled
with the appropriate tool.
with the appropriate tool.
7
Carefully pull the disk drive sled out of chassis
using its handle.
using its handle.
8
Mark or tag the disk drive sled with the array
serial number, the date removed, and its slot
number.
serial number, the date removed, and its slot
number.
9
Place the disk drive sled in an appropriate ESD
container or bag.
container or bag.
10 Install the replacement disk drive sled into the
array chassis using proper ESD control steps.
The disk drive sled assembly is keyed and can
only be inserted one way.
The disk drive sled assembly is keyed and can
only be inserted one way.
11 Tighten the two screws on the disk drive sled
with the appropriate tool.
1 2
3
4
5
6 7 8 9 10 11 12
Drive Sleds
Management Card