SUMMARY
SQL Full backup failing with snapshot failure due to insufficient space on databases volume
ISSUE
SQL Full backup failing with snapshot failure due insufficient space on databases volume
FATAL: No backup data received from client.
----- Error Messages -----
Unable to perform backup operation, detecting that SQL Server VSS Writer is in failed state. Please verify that SQL Server is accessible. Review the events in the Application event log for more information
Writer: 'SqlServerWriter':
- Status: 8 'VSS_WS_FAILED_AT_PREPARE_SNAPSHOT'
- Writer Failure code: 0x800423f3 (VSS_E_WRITERERROR_RETRYABLE)
- Writer ID:'{a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}'
- Instance ID:'{595479bd-a258-4bd6-88b7-6ac097eb4d68}'
----- End Error Messages -----
RESOLUTION
Free space on volume
OR
Move databases to a different volume:
Refer to Microsoft SQL documentation at https://docs.microsoft.com/en-us/sql/relational-databases/databases/move-system-databases and https://docs.microsoft.com/en-us/sql/relational-databases/databases/move-user-databases
OR
Manually perform database shrinking
Refer to Microsoft SQL documentation at https://docs.microsoft.com/en-us/previous-versions/sql/sql-server-2008-r2/ms189080(v=sql.105)
CAUSE
Limited space on volume
NOTES
For more detailed information on backup failures and performance issues see Unitrends KB 5062 - Backup Failures and Performance Issues