Acronis Disk Director 12 - User Guide - Manual (Page 38)

38 Copyright © Acronis International GmbH, 2002-2014
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When a disk containing one of the mirrors becomes missing—for example, after you replaced a
failed hard disk drive with a new one
You can later make the volume fault-tolerant again by adding a mirror to it—see Add mirror.
You cannot remove a mirror when both disks containing the mirrored volume are missing.
To remove a mirror from a mirrored volume
1. Right-click the mirrored volume from which you want to remove a mirror, and then click Remove
mirror.
2. Select the mirror that you want to remove.
Note: If one of the mirrors is located on a missing disk, you can remove only that mirror.
3. Click OK to add the pending mirror removal operation.
The results of the pending operation are immediately displayed as if the operation had been
performed.
To perform the pending operation you will have to commit it (p. 22). Exiting the program without
committing the pending operations will effectively cancel them.
5.17 Breaking a mirrored volume
Mirrored volumes provide fault tolerance by storing two exact copies of data—called mirrors—on
two different disks.
Breaking a mirrored volume means converting its two mirrors into two independent simple volumes
with initially identical content.
One of the two volumes will retain the drive letter and volume label of the mirrored volume. You can
assign a drive letter and/or volume label to the other volume.
This operation differs from removing a mirror—see Remove mirror (p. 37)—in that when you remove
a mirror, only the remaining mirror becomes a simple volume.
You can break a mirrored volume only when the disks containing both of its mirrors are online.
To break a mirrored volume
1. Right-click the mirrored volume that you want to break, and then click Break mirror.
2. For one of the two mirrors, specify the volume label and/or drive letter that the mirror will have
when it is converted to a volume. To not assign a drive letter to the volume, click Do not assign
the letter.
The other mirror will be assigned the drive letter and volume label of the original mirrored
volume.
3. Click OK to add the pending mirrored volume breaking operation.
The results of the pending operation are immediately displayed as if the operation had been
performed.
To perform the pending operation you will have to commit it (p. 22). Exiting the program without
committing the pending operations will effectively cancel them.