We spent several days debugging failed backups of two new Win2K8R2 media servers. Once we involved our Veritas RPS he solved the issue in under 20 minutes - disks on each of the media servers that were 64 TBs in size. We had to change a Registry Key to notify NetBackup of this fact.
Once we were pointed to the issue, I search the bpbkar logs and found the messages:
12:18:19.314 [10928.2296] <2> ov_log::V_GlobalLog: INF - ERROR: Disc \\?\Volume{39371552-0ca3-11e6-a02b-5897bd46b8b8}\ is greater than defined threshold of 63 TB
12:18:19.314 [10928.2296] <2> ov_log::V_GlobalLog: INF - EXIT VssSnapshotVolume::CheckForUnsupportedDiscs() return=[0x8004230c VSS_E_VOLUME_NOT_SUPPORTED]!
12:18:19.314 [10928.2296] <2> ov_log::V_GlobalLog: INF - EXIT VssSnapshotVolume::Initialize() return=[0x8004230c VSS_E_VOLUME_NOT_SUPPORTED]!
We had not found them initially as they were flagged with a severity of <2> even though they caused the backups to fail. Therefore, they should be <16> or higher.
Please make this change.