IBM DR550, Problem Determination And Service Manual

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Concurrently maintainable battery pack : Indicates that the rechargeable cache
battery pack can be replaced while the adapter continues to operate.
Battery pack can be safely replaced : Indicates that the adapter’s write cache has
been disabled and the rechargeable cache battery pack can be safely replaced.
Forcing a Rechargeable Battery Error
This option allows you to force your PCI-X SCSI RAID Controller to put its cache
battery pack into an error state. This state requires replacement of the battery.
Typically, performing this task ensures that write caching is stopped prior to
replacing a cache battery pack.
Forcing the battery error will result in the following:
v
The system logs an error.
v
Data caching becomes disabled on the selected controller.
v
System performance could become significantly degraded until the cache battery
pack is replaced on the selected controller.
Ensure that you have the correct type and quantity of cache battery packs to do
the replacement. To resume normal operations, replace the cache battery pack.
The cache battery pack for 571F storage I/O adapter and 575B Auxiliary Cache
adapter is contained in a single battery FRU that is physically located on the 575B
Auxiliary Cache adapter. The functions of forcing a battery pack error and starting
adapter cache on either adapter in the card set will result in the same function
automatically being performed on the other adapter in the card set.
To force the battery error, do the following:
1. Navigate to the PCI-X SCSI Disk Array Manager.
2. Select Diagnostics and Recovery Options .
3. Select Controller Rechargeable Battery Maintenance .
4. Select Force Controller Rechargeable Battery Error .
5. Select your PCI-X SCSI RAID Controller whose battery you want to replace.
Note: Using this option places the battery into the error state, which requires it
to be replaced.
6.
Press
Enter
.
7. Replace the cache battery pack as described in “Replacing the rechargeable
cache battery pack.”
Replacing the rechargeable cache battery pack
This section provides instructions for replacing the rechargeable cache battery pack.
Note: When replacing the cache battery pack, the battery must be disconnected for
at least 60 seconds before connecting the new battery. This is the minimum
amount of time needed for the card to recognize that the battery has been
replaced.
Chapter 12. Field replacement
97