190 Upgrade and Maintenance Manual
TX140 S2
Expansion cards and backup units
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.
9.5.2 Installing an FBU
V CAUTION!
For further safety information, please refer to chapter "Important
information" on page 31.
9.5.2.1 Preliminary steps
Ê "Disabling SVOM boot watchdog functionality" on page 70
Ê "Shutting down the server" on page 46
Ê "Disconnecting the server from the mains" on page 46
Ê "Getting access to the component" on page 47
Ê "Removing the fan module" on page 151
Upgrade and Repair Unit
(URU)
Hardware: 5 minutes
Tools: tool-less
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