HP DL580 ProLiant DL580 Generation 4 Maintenance and Service Guide - Page 46

Removing the BBWC cache module

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Page 46 highlights

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. Removing the BBWC cache module 1. Power down the server (on page 29). 2. Extend or remove the server from the rack ("Extending the server from the rack" on page 27, "Remove the server from the rack" on page 29). 3. Remove the access panel ("Removing the access panel" on page 29). CAUTION: To prevent a server malfunction or damage to the equipment, do not add or remove the battery pack while an array capacity expansion, RAID level migration, or stripe size migration is in progress. CAUTION: After the server is powered down, wait 15 seconds and then check the amber LED before unplugging the cable from the cache module. If the amber LED blinks after 15 seconds, do not remove the cable from the cache module. The cache module is backing up data, and data is lost if the cable is detached. 4. Remove the BBWC cache module from the controller. 5. Disconnect the cable from the cache module only if the battery pack is not being used to recover data from the server or transfer data to another server. Removal and replacement procedures 46

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Removal and replacement procedures
46
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.
Removing the BBWC cache module
1.
Power down the server (on page
29
).
2.
Extend or remove the server from the rack ("
Extending the server from the rack
" on page
27
,
"
Remove the server from the rack
" on page
29
).
3.
Remove the access panel ("
Removing the access panel
" on page
29
).
CAUTION:
To prevent a server malfunction or damage to the equipment, do not add or
remove the battery pack while an array capacity expansion, RAID level migration, or stripe
size migration is in progress.
CAUTION:
After the server is powered down, wait 15 seconds and then check the amber LED
before unplugging the cable from the cache module. If the amber LED blinks after 15 seconds,
do not remove the cable from the cache module. The cache module is backing up data, and
data is lost if the cable is detached.
4.
Remove the BBWC cache module from the controller.
5.
Disconnect the cable from the cache module only if the battery pack is not being used to recover
data from the server or transfer data to another server.