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VSS errors for local backup with 100TB drive attached

Level 3

Getting odd VSS/snapshot errors on a single job after adding a new, locally-attached SAN to the server.  The new SAN has 100TB of usable space, a big increase from the 40TB SAN that was replaced.  Ever since then, a job that is backing up some data from the local BackupExec server C & D drives to the attached E-drive SAN completes, but shows this exception:  The job completed successfully. However, the following conditions were encountered: A snapshot operation required by this job was unsuccessful. Check the job log and the Windows Event Viewer for additional information.  

I came across this support article:  Windows System State backup fails if any mounted volume's capacity is greater than 63,000,000,000,00....  I made the specific registry entry and restarted the server but every time this job runs I get the same exception error.  One interesting thing to note, is that I have unchecked the "use snapshot technology" for this particular job, yet the exception error still references a snapshot operation.  While this job does complete, seeing the exception errors is getting annoying.  Any ideas?





This issue occurs because Microsoft does not support VSS on volumes larger than 64 TB. Also, writable snapshots or snapshots larger than 64 TB are not supported.


U may split 100TB into 2 drives