03-26-2021 08:42 AM
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?
04-03-2021 10:33 PM
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