Symptoms

PowerProtect File System Agent backups may fail with: ABF0001: Unable to protect the asset E:\ on the host my-server.my-domain.local from the backup performed at time MM/DD/YYYY 8:02:04 PM because the following error occurred: Unable to take backup for the volume 'E:\' since volume cluster size '262144' is greater than the maximum supported cluster size '65536'.

Cause

The volume of the affected server is formatted with a block size larger than 65,536 bytes.PowerProtect File System Agents only supports a maximum cluster volume size of 64 kilobytes (KB).

Resolution

The only workaround is to reformat the volume to a maximum block size of less than 64 KB.

Support Cases