RAID - User Guide

while using the docking station's recovery drive, all new or revised data on the primary hard drive is
automatically copied to the recovery hard drive when the notebook is redocked. This policy also
allows for an unfinished mirroring operation to be completed if it was interrupted when you undocked
the notebook.
When using the update on-request policy, data on the primary hard drive is copied to the mirror hard
drive only when you request it by selecting Update Recovery Volume in Recovery. After the request,
only the new or updated files on the primary drive are copied to the mirror hard drive. Prior to
updating the mirror hard drive, the on-request policy allows a file to be recovered if the corresponding
file on the primary hard drive is corrupted. The on-request policy can also protect data on the mirror
hard drive if the primary hard drive is attacked by a virus, provided you do not update the mirror hard
drive after the virus attack.
NOTE: You can change the mirror update policy at any time by right-clicking Modify Volume Update
Policy.
Automatic hard drive switching and rapid recovery
If the primary hard drive fails, Recovery automatically switches to the mirrored drive without user
intervention. Recovery displays a message to notify you of the primary hard drive failure. In the
meantime, the computer can boot from the mirrored hard drive. When a new primary hard drive is
installed and the computer is booted, Recovery’s rapid recovery feature copies all mirrored data to
the primary hard drive.
NOTE: If using the update on request policy and the primary hard drive fails or a file on the primary
hard drive becomes corrupted, all unmirrored data is lost.
Simplified migration from RAID to non-RAID
Users can migrate from a RAID 1 or Recovery volume to two non-RAID hard drives, called “breaking
the array,” by following the instructions in Resetting RAID drives to non-RAID on page 25.
Migration from RAID 1 to Recovery is also supported. However, migration from RAID 0 to RAID 1 or
from RAID 0 to a non-RAID primary hard drive is not supported.
12 Chapter 4 Intel Rapid Storage Technology