Thursday, April 1, 2010

How to resynchronize and repair the Mirrored Set of Windows Server 2008

As you know, Windows Server 2008 R2 is able to synchronize the mirrored Volumes on the dynamic Drives automatically. However, the Data on the Mirrored Drives will become out of sync. Consider, if one of the Drives becomes offline, then the Data will be written on the online Drive. At the same time, you can resynchronize and repair the mirrored sets, but it is required to rebuild the set using disks with the same partition style either master boot record (MBR) or GUID partition table (GPT). Moreover, you’ve to get the both drive in the mirrored set online and the mirrored set’s status should read Failed Redundancy. The corrective actions you take will depend upon the failed volume’s status:
•    You need to make sure, if the Drive has the power and it is connected properly when the status is Missing or Offline. Then, start the Disk Management to right click on the failed volume and then to click Reactivate Volume. You can right click on the Volume and then click Resynchronize Mirror if the volume doesn’t come to the healthy status.


•    Right click on the failed volume and then click Reactivate Volume if the status is Online (Errors). Therefore, the status of the Drive should change to Regenerating and then to Healthy. You can right click on the Volume and then click Resynchronize Mirror if the volume doesn’t come to the healthy status.
•    It is required to rescan the Drives, if any of the Drives shows that it is Unreadable. You can do this by selecting Rescan Discs from Disk Management’s Action Menu. If the Drive status still doesn’t make any change, it is required to reboot the Computer.
•    If any of the Drives still doesn’t work and work online, right click on the failed volume and then select Remove Mirror. Then, right click the remaining volume in the Original Mirror and then click Add Mirror. Now, you’ve to mirror the volume on an unallocated area of the free space. If you don’t have free space, you can create space by replacing the failed drives or deleting other volumes.

By ,