Duplicate Critical Raid 1 Array - ASROCK 775Dual-880Pro Getting Started

8.

Duplicate Critical RAID 1 Array

If, during the system-booting, the software detects the inconsistence
between the source and the mirror disks of RAID 1, the disk array will
be marked as critical status, and the software will automatically prompt
user to duplicate the RAID 1 to make the mirror disk consist with the
corresponding source disk again.
You may click "Yes" to synchronize now or click "No" to synchronize
later.
When the synchronization starts, a dialog will show the process. You
can pause or cancel this process at any time. If you cancel the
synchronization process, the RAID is on "need-sync" condition. You
should synchronize again to guarantee the data are identical between
the source and the mirror disk drives.
A message will pop up when synchronization is finished.