Description
This wait accumulates while SQL Server is waiting for device operations to complete. Not much is known about this wait type as it is not documented by Microsoft. Values in this wait type are most common on instances using snapshot backups. Small values do not appear to cause any issues. Pre-emptive waits are different from regular (emptive) waits as their execution is controlled by an external processes such as the operating system
Resolved by
DBAs
Suggested solutions
- Check the SQL Server error log for more information
- Check Windows Event Viewer for any suspicious events
- Examine other wait statistics on the instance. Investigate accordingly
Additional research
Should I Be Using SAN Snapshots as a Backup Solution?
See more
Check out SpotLight, a free, cloud based SQL Server monitoring tool to easily detect, monitor, and solve SQL Server performance problems on any device