Replacing The Lsi Raid Battery Backup Unit Or Supercap Power Module - Cisco UCS C220 M3 Installation And Service Manual

Chapter 3 Maintaining the Server

Replacing the LSI RAID Battery Backup Unit or SuperCap Power Module

This server supports installation of one RAID battery backup unit (BBU) or one SuperCap Power
Module (SCPM). The unit mounts to a clip on the removable air baffle (see
If you are replacing a BBU on an older card, order the iBBU09 battery backup unit (UCS-RAID-BBU=).
Note
The newer SuperCap power module is not compatible with older, non-CacheVault cards.
The SCPM provides approximately 3 years of backup for the disk write-back cache DRAM in the case
of sudden power loss by offloading the cache to the NAND flash.
Warning There is danger of explosion if the battery is replaced incorrectly. Replace the battery only with the
same or equivalent type recommended by the manufacturer. Dispose of used batteries according to
the manufacturer's instructions.
Statement 1015
To replace the RAID controller BBU or SCPM, follow these steps:
Remove a backup unit (see
Step 1
a.
b.
If you cannot safely view and access the component, remove the server from the rack.
Caution
c.
d.
e.
Install a new backup unit:
Step 2
a.
b.
c.
d.
OL-25760-01
Figure
Power off the server as described in the
page 3-7.
Slide the server out the front of the rack far enough so that you can remove the top cover. You might
have to detach cables from the rear panel to provide clearance.
Remove the top cover as described in the
on page 3-8.
Disconnect the cable from the existing backup unit.
Slide the backup unit free of the clips on the air baffle mounting point (see
Slide the new backup unit into the clips on the air baffle mounting point.
Connect the cable from the RAID controller to the new backup unit.
Replace the top cover.
Replace the server in the rack, replace cables, and then power on the server by pressing the Power
button.
3-24).
"Shutting Down and Powering Off the Server" section on
"Removing and Replacing the Server Top Cover" section
Cisco UCS C220 Server Installation and Service Guide
Installing or Replacing Server Components
Figure 3-24).
Figure 3-24).
3-45