Hardware options installation 70
IMPORTANT: The battery pack might have a low charge when installed. In this case, a POST
error message is displayed when the server is powered up, indicating that the battery pack is
temporarily disabled. No action is necessary on your part. The internal circuitry automatically
recharges the batteries and enables the battery pack. This process might take up to four hours.
During this time, the cache module functions properly, but without the performance advantage of
the battery pack.
NOTE: The data protection and the time limit also apply if a power outage occurs. When power
is restored to the system, an initialization process writes the preserved data to the hard drives.
To install the component:
1. Power down the server (on page 20).
2. Do one of the following:
o Open or remove the tower bezel, as needed ("Open or remove the tower bezel" on page 20).
o Extend the server from the rack (on page 21).
3. Remove the access panel (on page 21).
4. Install the storage controller, if not installed ("Installing expansion boards" on page 65).
5. Open the cache module latches.
6. Install the cache module on the controller.
