Avamar: Gen4S Hardware: Battery has failed and cannot support data retention. Please replace the battery Event ID:150

The following message may appear in the UI Event Management tab:

<MRMON150> Controller ID: 0 Battery has failed and cannot support data retention. Please replace the battery Event ID:150

1. Log in to the Avamar Utility Node as admin.

2. Elevate to root privilege.

3. Load the root keys. See Avamar: How to Log in to an Avamar Server and Load Various Keys for more information.

4. Using the information from the UI event:

a. Determine which node that produced the error message.

b. Connect to tat node as root using the command below or equivalent:

ssn --user=root 0.# 

(Where 0.# is the physical node number) 

c. Review the /var/log/messages file to confirm the error (on the node producing the error).

cat /var/log/messages | grep -i battery

Oct 10 17:18:58 avamar MR_MONITOR[5489]: <MRMON151> Controller ID:  0   Battery relearn started
Oct 10 17:20:06 avamar MR_MONITOR[5489]: <MRMON152> Controller ID:  0   Battery relearn in progress
Oct 10 17:20:06 avamar MR_MONITOR[5489]: <MRMON153> Controller ID:  0   Battery relearn completed
Oct 26 03:15:19 avamar MR_MONITOR[5489]: <MRMON150> Controller ID:  0   Battery has failed and cannot support data retention. Please replace the battery Event ID:150

d. Confirm that the node has received Event ID 150. 

e. Create a Service Request with the Dell Technologies Avamar Support team to determine if the node requires a transplant.

The previous advice was to perform a battery learn cycle, and run the CmdTool2 -AdpBbuCmd -GetBbuStatus -a0 command to confirm. 

As the battery is actually a Super Cap, and has no memory, this is never effective. There is no requirement to perform a learn cycle before requesting a node replacement.