Let's assume that the system has four physical disks: Disk 1, Disk 2, Disk 3 and Disk 4.
A list of volumes can be obtained by using the following command:
acrocmd list disks
Num Partition Flags Start Size Type GUID
----------- ----------- -------- ---------- ---------- -------- -----------
Disk 1 16,384 MB PS_MBR
1-1 sda1 Pri,Act 0.031 MB 203.9 MB Ext 2
1-2 sda2 Pri 204 MB 12,002 MB Reiser
1-3 sda3 Pri 12,206 MB 1,028 MB Linux swap
Unallocated-1-1 Unallocated 13,233 MB 3,151 MB
Disk 2 8,192 MB PS_MBR
Unallocated-2-1 Unallocated 4,110 MB 4,082 MB
Disk 3 1,024 MB PS_NONE
Unallocated-3-1 Unallocated 0 MB 1,024 MB
Disk 4 8,192 MB PS_MBR
Unallocated-4-1 Unallocated 4,110 MB 4,082 MB
Dynamic volumes:
1 Dyn1 MyVG-MyLV 0 MB 4,096 MB Ext 3 A5C349F8...
1 Dyn2 md0 0 MB 2,055 MB Ext 2 FFF5E076...
The logical volume, DYN1, occupies basic volumes 2-2 and 4-2 (which are not shown by the above command). The RAID-1 volume, DYN2, occupies basic volumes 2-1 and 4-1 (which are not shown by the above command either).
To back up the logical DYN1 volume, run the following command (here, the name of the backup is assumed to be my_archive and its location to be /home/user):
acrocmd backup disk --volume=DYN1 --loc=/home/user --arc=my_archive
To back up the RAID-1 volume DYN2, run the following command:
acrocmd backup disk --volume=DYN2 --loc=/home/user --arc=my_archive
To back up all three hard disks with volumes, select the volumes 1-1, 1-2, 1-3, DYN1 and DYN2:
acrocmd backup disk --volume=1-1,1-2,1-3,DYN1,DYN2 --loc=/home/user --arc=my_archive
If you select Disk 3 or volumes 2-1, 2-2, 4-1 or 4-2, the program will create a raw (sector-by-sector) backup.