ACRONIS Backup & Recovery 10 Advanced Server Virtual Edition User Manual page 223

A new NT signature will be created only if the existing one differs from the one in the backup.
Otherwise, the existing NT signature will be kept.

Create new
The program will generate a new NT signature for the target hard disk drive.

Recover from backup
The program will replace the NT signature of the target hard disk with one from the disk backup.
Recovering the disk signature may be desirable due to the following reasons:

Acronis Backup & Recovery 10 creates scheduled tasks using the signature of the source hard
disk. If you recover the same disk signature, you don't need to re-create or edit the tasks
created previously
 Some installed applications use disk signature for licensing and other purposes

This enables to keep all the Windows Restore Points on the recovered disk

To recover VSS snapshots used by Windows Vista's "Previous Versions" feature

Keep existing
The program will leave the existing NT signature of the target hard disk as is.
6.3.6.2 Volumes
Available volume destinations depend on the agents operating on the machine.
Recover to:
Physical machine
Available when the Acronis Backup & Recovery 10 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.
New virtual machine (p. 225)
If Acronis Backup & Recovery 10 Agent for Windows is installed.
The selected volumes will be recovered to a new virtual machine of any of the following
types: VMware Workstation, Microsoft Virtual PC, Parallels Workstation or Citrix XenServer
virtual appliance. The virtual machine files will be saved to the destination you specify.
If Acronis Backup & Recovery 10 Agent for Hyper-V or Agent for ESX/ESXi is installed.
These agents enable creating a new virtual machine on the virtualization server you specify.
The new virtual machine will be configured automatically, the source machine configuration
being copied where possible. The configuration is displayed in the Virtual Machine Settings
(p. 226) section. Check the settings and make changes if necessary.
Then you proceed to the regular volume mapping procedure described below.
Existing virtual machine
Available when the Acronis Backup & Recovery 10 Agent for Hyper-V or Agent for ESX/ESXi is
installed.
On selecting this, you specify the virtualization server and the target virtual machine. Then
you proceed to the regular volume mapping procedure described below.
Please be aware that the target machine will be powered off automatically before recovery. If you prefer to
power it off manually, modify the VM power management option.
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