Acronis Backup for Linux Server - User Guide - Manual (Page 102)

102 Copyright © Acronis International GmbH, 2002-2014
How the automatic mapping works
Acronis Backup automatically maps the disks or volumes to the target disks only if the system
bootability can be preserved. Otherwise, the automatic mapping is canceled and you have to map
the disks or volumes manually.
Also, you have to map the volumes manually if they are Linux logical volumes, or Linux software RAID
(MD devices). For more information on recovering logical volumes and MD devices, see Recovering
MD devices and logical volumes (p. 27).
The automatic mapping is performed as follows.
1. If the disk or volume is recovered to its original location, the mapping process reproduces the
original disk/volume layout.
The original location for a disk or volume means exactly the same disk or volume that has been backed up.
A volume will not be considered original if its size, location or other physical parameters have been changed
after backup. Changing the volume letter or label does not prevent the software from recognizing the
volume.
2. If the disk or volume is recovered to a different location:

When recovering disks: The software checks the target disks for size and volumes. A target
disk must contain no volumes and its size must be large enough to place the disk being
recovered. Not initialized target disks will be initialized automatically.
If the required disks cannot be found, you have to map the disks manually.

When recovering volumes: The software checks the target disks for unallocated space.
If there is enough unallocated space, the volumes will be recovered "as is".
If unallocated space on the target disks is less than the size of the volumes being recovered,
the volumes will be proportionally shrunk (by decreasing their free space) in order to fit the
unallocated space. If the shrunk volumes still cannot fit the unallocated space, you have to
map the volumes manually.
5.1.4.2 Selecting target volumes
Available volume destinations depend on the agents operating on the machine.
Recover to:
Physical machine
Available when the Acronis Backup Agent for Windows or Agent for Linux is installed.
The selected volumes will be recovered to the physical disks of the machine the console is
connected to. On selecting this, you proceed to the regular volume mapping procedure described
below.
Disks/volumes
Map automatically
Acronis Backup attempts to map the selected volumes to the target disks as described in the
"How the automatic mapping works" (p. 102) section. If you are unsatisfied with the mapping
result, you can re-map volumes manually. To do this, you have to unmap the volumes in a
reverse order; that is, the last mapped volume should be unmapped first. Then, map the volumes
manually as described below.
Recover [Disk #] MBR to: [If the Master Boot Record is selected for recovery]
Disk # (p. 103)