Displaying rechargeable battery information
Logical partitioning
SAS RAID controllers for IBM i
SAS RAID controllers for Linux
SAS RAID controllers for AIX
Service considerations for the cache battery pack
To prevent data loss, follow the procedures before replacing the cache battery pack on the cache RAID
cards.
Note: Concurrent maintenance of adapter battery is not supported. Even with failed or missing batteries,
the card associated with the battery must first be removed. For more information, see Removing and
replacing SAS RAID adapters and batteries.
Attention: To maintain system availability and prevent possible data loss, you must understand that
these features have implications on the SAS configuration and data accessibility of the system.
Attention: Do not attempt to remove any parts related to the SAS subsystem if the cache data present
LED on the card in either P1-C19 or P1-C14 is flashing. To see this LED, you must shut down the system
and remove the service cover. The LED shows a no-touch icon (a hand with a slash through it), and
indicates that data might be in the cache on the adapter. To prevent data loss, first make sure the system
is shut down correctly. If either cache data present LED is flashing, see one of the following topics before
removing any SAS subsystem parts. You can safely replace the cache battery pack when Yes is displayed
next to Battery pack can be safely replaced on the Battery Information panel (for the Linux and IBM i
systems) or the COMMAND STATUS panel (for AIX systems).
The following figure shows the location of the cache data present LED in the 8202-E4C, 8202-E4D,
8205-E6C, or 8205-E6D SAS subsystem.
14 SAS subsystem
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