Data Domain DD400 Series, User Manual

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Chapter 19: Hardware Servicing 187
Operations for Trained Service Personnel
6. Slide the fan into the rack making sure that the power plug seats securely. The fan frame
should line up with the frame of the other fan.
7.
Replace the top panel.
8. Restart the system if you shut down the system for the replacement procedure.
9.
Use the
system show fans
command to check the fan speed, which confirms that the
replacement is working.
Replace the Motherboard Battery
The lithium battery on the motherboard should not need replacement. In the unusual case of a
battery failure, the disk controller in peripheral card slot two and optional gigabit Ethernet NIC in
slot three must be removed to reach the battery. Figure 34 shows the battery location in the back
left corner of the system. The figure does not show the peripheral cards that are usually in place
over the battery.
1.
Shut down the system with the
system poweroff
command.
2. Remove all three power cords.
3.
Remove the system top panel.
Caution
Make sure that all three power cords are removed from the system.
Figure 34: Motherboard battery
Battery