Incremental GRT enabled Backups of Exchange 2010 DAG fails intermittently with -1022 There is a disk IO Error using Backup Exec 2010 R3 also after SP2

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Incremental and/or Differential GRT enabled Backups of Exchange 2010 Database Availability Group (DAG) fails intermittently with -1022 There is a disk IO Error using Backup Exec 2010 R3


Error Message

Unable to complete the operation for the selected resource using the specified options.  The following error was returned when opening the Exchange Database file:  '-1022 There is a disk IO error.


Timeout issues, possibly due to concurrent backups running.


Following registry key can be added to increase the timeout period, if running the backup on tape then create the registry key on the Exchange server(s). If backing up to Backup to Disk folder then create the registry on Media server.

Warning:   Incorrect use of the Windows registry editor may prevent the operating system from functioning properly. Great care should be taken when making changes to a Windows registry. Registry modifications should only be carried-out by persons experienced in the use of the registry editor application. It is recommended that a complete backup of the registry and workstation be made prior to making any registry changes.

Key :   HKLM\SYSTEM\CurrentControlSet\Services\VirtFile
Value: VFF Extended Timeout
Type:  DWORD
Max value is 600 seconds

Valid values 240, 480, 600. 600 is the max setting.

Start out at 240 seconds at first. If error still occurs then 480, before going to 600.

Restart all the Backup Exec Services for the changes to take effect.



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