CX250 S2
Upgrade and Maintenance Manual
153
Expansion cards and battery backup units
6.7
Battery Backup Units (BBU)
The Battery Backup Unit (BBU) backs up the memory contents of the connected
SAS RAID controller in the event of a power failure.
6.7.1
Installing a BBU
V
CAUTION!
For further information, please refer to chapter
"Important information" on
page 31
.
6.7.1.1
Required tools
●
Preliminary and concluding steps: tool-less
●
Main steps:
– Phillips PH1 / (+) No. 1 screw driver
6.7.1.2
Preliminary steps
Perform the following procedures:
Ê
Locate the desired server node with the ID button.
Ê
"Shutting down the server node" on page 45
Ê
If applicable, remove all external cables from the server node.
Ê
"Removing the server node from the server enclosure" on page 46
Upgrade and Repair Units (URU)
Average hardware task duration: 5 minutes
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