Replacing The Supercap Power Module (Raid Backup Battery) - Cisco UCS C240 M4 Installation And Service Manual

Installing or Replacing Server Components

Replacing the Supercap Power Module (RAID Backup Battery)

This server supports installation of one supercap power module (SCPM). The unit mounts to a clip on
the removable air baffle (see
module (TMM) attached to your RAID controller card because the connector for the SCPM cable is on
the TMM.
See also:
•
•
The SCPM provides approximately three years of backup for the disk write-back cache DRAM in the
case of a 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
Step 1 Power off the server as described in
Step 2 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.
If you cannot safely view and access the component, remove the server from the rack.
Caution
Remove the top cover as described in
Step 3
Remove an existing SCPM:
Step 4
a.
b.
Install a new SCPM:
Step 5
a.
b.
Note
Replace the top cover.
Step 6
Replace the server in the rack, replace cables, and then power on the server by pressing the Power button.
Step 7
Cisco UCS C240 M4 Server Installation and Service Guide
3-40
Figure
Replacing a Cisco Modular RAID Controller Card, page 3-36
Replacing a Modular RAID Controller Transportable Memory Module (TMM), page 3-38
Disconnect the existing SCPM cable from the transportable memory module (TMM) that is attached
to the modular RAID controller card.
Pull back the plastic clip that closes over the SCPM slightly, and then slide the SCPM free of the
clips on the air baffle mounting point (see
Slide the new backup unit into the holder on the air baffle mounting point until the clip clicks over
the top edge of the SCPM.
Connect the cable from the SCPM to the TMM that is attached to the modular RAID controller card.
Put the cable through the opening on the rear of the air baffle (rather than over the air baffle) to
keep the cable from interfering with the top cover of the server.
3-21). The SCPM requires that you have a transportable memory
Shutting Down and Powering Off the Server, page
Removing and Replacing the Server Top Cover, page
Figure 3-21).
Chapter 3 Maintaining the Server
3-9.
3-10.
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