9.5 Backup Units
9.5.1 Basic information
The Battery Backup Unit (BBU) or Flash Backup Unit (FBU) backs up the
memory contents of the connected SAS RAID controller in the event of a power
failure. The server can accommodate up to two backup units.
Figure 165: BBU / FBU mounting positions
1 Mounting position for first BBU / FBU
2 Mounting position for second BBU / FBU
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