A. If you lose part of a fault-tolerant volume (e.g., by hardware failure), the OS will display the message A disk that is part of a fault-tolerant volume can no longer be accessed. The drive will still be usable, but you won’t have the mirroring capability. To break the mirror set, complete the following steps:

  1. From the Start menu, select Programs, Administrative Tools, then Disk Administrator.
  2. The OS will display a message that a disk is missing.
  3. Click on the mirror, and select Break Mirror from the Fault Tolerance menu.
  4. Confirm the action.