Removing and replacing the cache battery pack for the
8248-L4T, 8408-E8D, or 9109-RMD
Learn how to remove and replace the cache battery pack.
To remove and replace the cache battery pack, complete the following steps:
1. Perform prerequisite tasks. For instructions, see “Before you begin” on page 21.
2. Begin with the power on.
To prevent data loss, the cache battery pack must be in an error state before the 175 MB Cache RAID
– Dual IOA Enablement card is removed from the system.
If you have powered the system off, power it on before you continue.
3. Select your operating system:
v AIX: Go to step 4.
v IBM i: Go to step 8.
v Linux: Go to step 6.
4. Force the cache battery pack into an error state on the AIX operating system (to prevent possible
data loss), as follows:
a. Navigate to the IBM SAS Disk Array Manager by completing the following steps:
1) At the command prompt, type smit and press Enter.
2) Select Devices -> Disk Array -> IBM SAS Disk Array.
3) Select IBM SAS Disk Array Manager from the menu that has options for configuring and
managing the IBM SAS RAID Controller.
b. Select Diagnostics and Recovery Options -> Controller Rechargeable Battery Maintenance ->
Force Controller Rechargeable Battery Error.
c. Select the PCI Express x8 Planar 3 Gb SAS RAID Adapter whose battery you want to replace.
This option places the battery into the error state, which requires it to be replaced.
d. Determine whether it is safe to replace the cache battery pack. See the following Displaying
rechargeable battery information procedure. It is safe to replace the cache battery pack when Yes
is displayed next to Battery pack can be safely replaced. You might need to reselect the option
Display Controller Rechargeable Battery Information multiple times because it might take
several minutes before it is safe to replace the cache battery pack.
e. Verify that the cache present LEDs are not flashing.
f. Display rechargeable battery information
1) Navigate to the IBM SAS Disk Array Manager by using the previous procedure.
2) Select Diagnostics and Recovery Options -> Controller Rechargeable Battery Maintenance ->
Display Controller Rechargeable Battery Information -> IBM SAS RAID Controller.
5. Go to step 9.
6. Force the cache battery pack into an error state on the IBM i (to prevent possible data loss), as
follows on the system or partition that contains the adapter:
a. Be sure that you are signed on to the system with at least service level authority.
b. Type strsst on the command line, and press Enter.
c. Type your service tools user ID and service tools password on the System Service Tools (SST)
Sign On display. Press Enter.
d. Select Start a Service Tool from the System Service Tools (SST) display, and press Enter.
e. Select Hardware Service Manager from the Start a Service Tool display, and press Enter.
© Copyright IBM Corp. 2013 11
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