i just noticed on a SBS 2011 that the backups were failing with details "Volume shadow copy operation failed with error 0x80042306"
The eventlog shows volsnap Event ID 25
"The shadow copies of volume C: were deleted because the shadow copy storage could not grow in time. Consider reducing the IO load on the system or choose a shadow copy storage volume that is not being shadow copied."
This started 2 months ago & the last completed backup is 12 June.
The Server is set up for a daily full backup at 20.00, the office closes at 18.00
All help is much appreciated.