Acronis Backup for Windows Server Essentials - User Guide - Manual (Page 355)

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first IDE hard disk of
a Linux machine first partition of the first IDE hard disk
drive. For more details, see "Note on Linux
machines" below.
First partition on the
first SCSI hard disk of
a Linux machine Type or select: /dev/sda1 sda1 is the standard device name for the
first partition of the first SCSI hard disk
drive. For more details, see "Note on Linux
machines" below.
First partition on the
first software RAID
hard disk of a Linux
machine Type or select: /dev/md1 md1 is the standard device name for the
first partition of the first software RAID
drive. For more details, see "Note on Linux
machines" below.
Note on Windows machines
Windows operating systems prior to Windows 7 and Windows Server 2008 R2 keep system files and
the loader on the same volume, unless a different volume has been specified during the system
installation. If Windows files and the loader are on the same volume, selecting either [SYSTEM] or
[BOOT] is enough to back up the entire operating system. Otherwise, select both [SYSTEM] and
[BOOT].
Operating systems starting with 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.
Because centralized backup plans usually include multiple machines with various operating systems,
Acronis recommends that you always select both the system and the boot volumes for backup. This
ensures the integrity of every operating system.
Note on Linux machines
You can include both Windows and Linux volumes (partitions) in one centralized backup plan.
For example, it is possible to set up a centralized backup plan 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). This forms 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, you can
specify the rule /dev/hda3 in the Data to Back Up dialog box.
Furthermore, a Linux partition can be mounted anywhere inside the tree. For example, /dev/hda3,
can be mounted as a “subdirectory” inside the tree. Such a tree might be /home/usr/docs. In this
case, you 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 backup plan to perform volume backups of Linux machines,
make sure that the paths entered in the selection rules for volumes correspond to partitions (such as
/dev/hda2 or /home/usr/docs in the previous example), and not to directories.