HP ProLiant DL980 DL980 G7 Maintenance & Service Guide - Page 65

BBWC low profile I/O expander location, Recovering data from the battery-backed write cache

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BBWC low profile I/O expander location BBWC procedures are the same for a BBWC located in the low profile I/O expander. Recovering data from the battery-backed write cache If the server fails, you can recover any data temporarily trapped in the BBWC by using the following procedure. CAUTION: Before starting this procedure, read the information about protecting against electrostatic discharge ("Preventing electrostatic discharge" on page 25). 1. Perform one of the following: o Set up a recovery server station using an identical server model. Do not install any internal drives or BBWC in this server. (This is the preferred option.) o Find a server that has enough empty drive bays to accommodate all the drives from the failed server and that meets all the other requirements for drive and array migration. 2. Power down the failed server ("Power down the server" on page 26). If any data is trapped in the cache module, an amber LED on the module blinks every 15 seconds. CAUTION: Do not detach the cable that connects the battery pack to the cache module. Detaching the cable causes any unsaved data in the cache module to be lost. 3. Transfer the hard drives from the failed server to the recovery server station. 4. Remove the BBWC [cache module and battery pack ("Removing the BBWC battery pack" on page 64)] from the failed server. 5. Perform one of the following: o Install the BBWC into an empty BBWC DIMM socket on the system board of the recovery server. Illustrated parts catalog 65

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Illustrated parts catalog 65
BBWC low profile I/O expander location
BBWC procedures are the same for a BBWC located in the low profile I/O expander.
Recovering data from the battery-backed write cache
If the server fails, you can recover any data temporarily trapped in the BBWC by using the following
procedure.
CAUTION:
Before starting this procedure, read the information about protecting against
electrostatic discharge ("
Preventing electrostatic discharge
" on page
25
).
1.
Perform one of the following:
o
Set up a recovery server station using an identical server model. Do not install any internal drives
or BBWC in this server. (This is the preferred option.)
o
Find a server that has enough empty drive bays to accommodate all the drives from the failed
server and that meets all the other requirements for drive and array migration.
2.
Power down the failed server ("
Power down the server
" on page
26
). If any data is trapped in the
cache module, an amber LED on the module blinks every 15 seconds.
CAUTION:
Do not detach the cable that connects the battery pack to the cache module.
Detaching the cable causes any unsaved data in the cache module to be lost.
3.
Transfer the hard drives from the failed server to the recovery server station.
4.
Remove the BBWC [cache module and battery pack ("
Removing the BBWC battery pack
" on page
64
)] from the failed server.
5.
Perform one of the following:
o
Install the BBWC into an empty BBWC DIMM socket on the system board of the recovery server.