f. Select Work with resources containing cache battery packs from the Hardware Service Manager
display, and press Enter.
g. Select Force battery pack into error state for the embedded SAS RAID adapter in the system
enclosure that you are working with from the Work with Resources containing cache battery
packs display, and press Enter.
h. On the Force Battery Packs Into Error State display, verify that the correct I/O adapter has been
selected, and press the function key that confirms your choice.
i. Return to the Work with Resources Containing Cache Battery Packs display, and select Display
battery information. Ensure that the Safe to replace cache battery field is set to Yes. This might
take several minutes and you might need to press the Refresh key to see the updated field.
7. Go to step 9.
8. Force the cache battery pack into an error state on the Linux operating system (to prevent possible
data loss), as follows:
a. Run the iprconfig utility by typing iprconfig.
b. Select Work with disk unit recovery -> Work with resources containing cache battery packs.
c. Select your adapter and type 2. Then press Enter to force the battery error.
Note: This option places the battery into the error state, which requires it to be replaced.
d. If you are sure you want to force a battery error, type c to confirm. If you do not want to force a
battery error, type q to cancel.
e. Determine whether it is safe to replace the cache battery pack. See Displaying rechargeable
battery information.
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.
f. Verify that the cache present LEDs are not flashing.
g. Display rechargeable battery information
1) Return to the Work with resources containing cache battery packs.
2) Select your adapter, and type 1.
3) Press Enter to display the battery information.
9. Remove the front cover. For instructions, see “Removing the front cover from the 8248-L4T,
8408-E8D, or 9109-RMD” on page 39.
10. Locate the cache battery pack slots P2-C9-C1-E1 and P2-C9-C1-E2.
12 Power Systems: Serial-attached SCSI RAID enablement and cache battery pack
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