Fujitsu Primergy RX4770 M1 - Backup Units

176 Upgrade and Maintenance Manual RX4770 M1
Expansion cards and backup units
9.8 Backup Units
9.8.1 Basic information
The Flash Backup Unit (FBU) backs up the memory contents of the connected
SAS riser in the event of a power failure. The PRIMERGY RX4770 M1 server
can accommodate up to two backup units.
Figure 72: FBU mounting positions
1 Mounting position for first FBU
2 Mounting position for second FBU