Fujitsu PRIMERGY TX120 S3 - Backup Units; Installing a BBU; Required Tools; Preliminary Steps

188 Upgrade and Maintenance Manual TX120 S3
Expansion cards and backup units
9.3 Backup Units
The Backup Unit backs up the memory contents of the connected SAS RAID
controller in the event of a power failure.
The server offers different backup units depending on the used RAID controller:
– BBU (Battery Backup Unit)
– FBU (Flash Backup Unit)
9.3.1 Installing a BBU
V CAUTION!
For further safety information, please refer to "Important information" on
page 37.
9.3.1.1 Required tools
● Preliminary and concluding steps: tool-less
● Installing a BBU: tool-less
9.3.1.2 Preliminary steps
Before installing a BBU, perform the following steps:
Ê Disable boot watchdog functionality as described in section "Disabling
SVOM boot watchdog functionality" on page 80.
Ê Shut down the defective server as described in section "Shutting down the
server" on page 58.
Ê Disconnect the AC power cord from the system.
Ê Remove the server cover as described in section "Opening the server" on
page 61.
Upgrade and Repair Units (URU)
Average task duration: 5 minutes