For information about maintaining the rechargeable battery for systems that run on the IBM i operating
system, see Rechargeable battery maintenance.
To force the cache battery pack into an error state, do the following steps on the system or partition that
is using the adapter.
1. Sign on to the system with at least service level authority.
2. On the command line, type strsst. Press Enter.
3. On the System Service Tools (SST) Sign On display, type your service tools user ID and service tools
password. Press Enter.
4. On the System Service Tools (SST) display, select Start a Service Tool. Press Enter.
a. On the Start a Service Tool display, select Hardware Service Manager. Press Enter.
b. On the hardware Service Manager display, select Work with resources containing cache battery
packs. Press Enter.
c. On the Work with Resources containing Cache Battery Packs display, select Force battery pack
into error state for the I/O card. Press Enter.
d. 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.
e. Return to the Work with Resources containing Cache Battery Packs display and select Display
battery information and verify that the Battery pack can be safely replaced field indicates yes.If
it does not indicate yes, contact your next level of support before continuing this procedure.
5. Verify that the cache data present light emitting diode (LED) is no longer flashing before replacing the
cache battery pack. See the feature descriptions and the figures in the “Replacing a battery pack”
section to determine if your adapter has a cache data present LED and the location of the LED.
6. Replace the cache battery pack using the procedure that sent you here. For a list of replacement
procedures, see “Replacing a battery pack.”
7. Restart the adapter's write cache by doing the following:
a. Return to the Work with Resources containing Cache Battery Packs display and select the Start
IOA cache. Press Enter.
b. Ensure that you get the message Cache was started.
Replacing a battery pack
Follow these guidelines before you replace the battery pack.
Note: When replacing the cache battery pack, the battery must be disconnected for at least 60 seconds
before you connect the new battery. This duration is the minimum amount of time that is needed for the
card to recognize that the battery has been replaced.
Note: The battery is a lithium ion battery. To avoid possible explosion, do not burn. Exchange only with
the IBM-approved part. Recycle or discard the battery as instructed by local regulations. In the United
States, IBM has a process for the collection of this battery. For information, call 1-800-426-4333. Have the
IBM part number for the battery unit available when you call.
Attention: To prevent data loss, if the cache battery pack is not already in the error state, follow the
steps described in Forcing a rechargeable battery error before proceeding. If the cache data present LED is
flashing, do not replace the cache battery pack or data will be lost. See the feature descriptions and the
figures in the following sections to determine if your adapter has a cache data present LED and the
location of the LED.
SAS RAID controllers for IBM i 35
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