Contact an experienced SQL Server administrator whenever this error occurs. Look at Windows Event Log for troubleshooting. ...

Contact an experienced SQL Server administrator whenever this error occurs. Look at Windows Event Log for troubleshooting. Run DBCC CHECKDB to determine the extent of the damage. It is possible that the problem is in the cache only and not on the disk itself. If so, restarting SQL Server corrects the problem. Otherwise, use DBCC to repair the problem. In some cases, it may be necessary to restore the DPM database.