ACRONIS Backup & Recovery 10 Advanced Server Virtual Edition User's Guide download pdf (Page 351)

Operating systems starting from Windows 7 and Windows Server 2008 R2 create a dedicated system

volume called System Reserved. If you select [SYSTEM], only this dedicated volume will be backed

up. Always select both [SYSTEM] and [BOOT] when backing up machines running these operating

systems.

Since backup policies are commonly applied to multiple machines with various operating systems,

Acronis recommends that you always select both the system and the boot volumes for backup, to

ensure the integrity of every operating system.

Note on Linux machines

You can include both Windows and Linux volumes (partitions) in one centralized backup policy.

For instance, it is possible to set up a policy to back up volume C: on Windows machines and partition

/dev/hda1 on Linux machines.

Unlike Windows, there is no clear distinction between a volume (partition) and a folder (directory) in

Linux. Linux has the root partition (denoted as /), to which elements of various types—including hard

disks, directories, and system devices—are attached (mounted), forming a tree similar to the file and

folder structure in Windows.

For example, let a Linux machine contain a hard disk which is split into three volumes, or partitions:

the first, second, and third partitions. These partitions are available in the tree as /dev/hda1,

/dev/hda2, and /dev/hda3, respectively. To perform a disk backup of the, say, third partition, one can

type /dev/hda3 in the row of the Volumes to back up selection rules dialog box.

Furthermore, a Linux partition can be mounted anywhere inside the tree. Say, /dev/hda3, can be

mounted as a “subdirectory” inside the tree, such as /home/usr/docs. In this case, one can type

either /dev/hda3 or /home/usr/docs in the Volume field to perform a disk backup of the third

partition.

In general, when setting up a centralized policy to perform volume backups of Linux machines, make

sure that the paths entered in the Volume field correspond to partitions (such as /dev/hda2 or

/home/usr/docs in the previous example), and not to directories.

Standard names for Linux partitions

Names such as /dev/hda1 reflect the standard way of naming IDE hard disk partitions in Linux. The

prefix hd signifies the disk type (IDE); a means that this is the first IDE hard disk on the system, and 1

denotes the first partition on the disk.

In general, the standard name for a Linux partition consists of three components:

 Disk type; hd for IDE drives, sd for SCSI drives, md for software RAID drives (for example, dynamic

volumes);

 Disk number; a for the first disk, b for the second disk, etc.;

 Partition number on the disk; 1 for the first partition, 2 for the second partition, etc.

To guarantee backing up selected disks regardless of their type, consider including three entries in

the Volumes to back up selection rules dialog box, one for each possible type. For example, to back

up the first hard disk of each Linux machine under a centralized policy, you may want to type the

following lines in the Volume field:

/dev/hda1

/dev/sda1

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ACRONIS Backup & Recovery 10 Advanced Server Virtual Edition User's Guide Page 351