Replacing The Battery In The Raid Controller - IBM FAStT200 Installation And User Manual

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19. Wait approximately one minute, and then check the green Host Loop LED, green
20. Refer to the storage-management software online help for instructions on bringing

Replacing the battery in the RAID controller

Each RAID controller contains a rechargeable battery that maintains the data in the
cache memory.
Use the following procedure if the storage-management software instructs you to
replace the battery because the current battery has failed or is nearing its expiration
date.
1. Check the storage-management software for instructions on battery replacement
2. Unpack the new battery.
3. Review all documentation that comes with the new battery for updated
4. Use the storage-management software to locate the RAID controller containing
5. Label each cable that connects to the RAID controller that contains the battery
6. If you have redundant RAID controllers (dual-controller configuration), use the
7. From the RAID controller that contains the battery that has failed, remove the
8. Remove the RAID controller as described in "Replacing a RAID controller" on
58
IBM FAStT200 and FAStT200 HA Storage Servers Installation and User's Guide
Expansion Loop LED, and amber Fault LED on the new RAID controller.
• If the Host Loop LED or the Expansion Loop LED is off, the RAID controller
might not be inserted correctly. Remove the CRU and reinsert it.
• If the Fault LED is on, the Host Loop LED and the Expansion Loop LED stay
off, or any other Fault LED is on, refer to the storage-management software
for problem determination.
the controller online.
procedures. If you are not using write-cache mirroring, this might involve clearing
cache memory on the RAID controller that contains the battery that has failed.
Follow the steps given in the software procedure before continuing with this
procedure.
Attention: When you handle electrostatic discharge (ESD) sensitive devices,
take precautions to avoid damage from static electricity. For details about
handling ESD-sensitive devices, see "Handling static-sensitive devices" on page
37.
Set the new battery on a dry, level surface. Save all packing materials in case you
need to return the battery.
Note: The battery comes with a new battery label. You will need this label later in
the procedure.
replacement procedures and other information.
the failed battery (the RAID controller Fault LED might be on).
that has failed. This ensures that all cables will be properly reconnected to the
RAID controller after you replace the battery.
storage-management software to take offline the RAID controller that contains the
battery that has failed.
Attention: To prevent data loss if you have a single-controller configuration, you
must shutdown your system before you can replace the RAID controller battery.
For the proper shutdown sequence, see "Turning off the storage server" on page
25.
Fibre Channel cables and then the GBICs. For more information, see "Working
with GBICs and fiber-optic cables" on page 17.
page 54.

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