15356: Acronis Disk Director 11 Advanced Server: Mirrored RAID Is in "Failed redundancy" in Windows Server 2003

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Operating Systems: 

This is a Windows Server 2003 specific issue. As a workaround, resync the disks in Windows Disk Management


  1. Using Acronis Disk Director 11 Advanced Server in Windows Server 2003, you create a Mirrored RAID from your basic system disk;
  2. You commit the operation and reboot the system to apply the changes;
  3. After the reboot, resyncing starts and Windows Server 2003 reboots the system again;
  4. After the second reboot the Mirrored RAID is in the Failed redundancy state.


This is specific only to the following conditions (all of which should be true):

  • The operating system is Windows Server 2003;
  • You created a Mirrored RAID from your basic system disk.



  1. Create a dynamic volume from the system disk and commit the operation.
  2. Once the system volume is dynamic, perform the operation.


Resync created Mirrored RAID in Windows Disk Management.

More information

Acronis Development Team is working on fixing the issue.


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