34 Copyright © Acronis, Inc., 2000-2009Acronis Backup & Recovery 10 can back up and recover dynamic volumes and, with minor limitations,basic GPT volumes.Backing up dynamic volumesDynamic and basic GPT volumes are backed up in the same way as basic MBR volumes. Whencreating a backup plan through the GUI, all types of volumes are available for selection as Items toback up. When using the command line, specify the dynamic and GPT volumes with the DYN prefix.Command line examplestrueimagecmd /create /partition:DYN1,DYN2 /aszThis will back up DYN1 and DYN2 volumes to the Acronis Secure Zone.trueimagecmd /create /harddisk:DYN /aszThis will back up all dynamic volumes in the system to the Acronis Secure Zone.The boot code on basic GPT volumes is not backed up or recovered.Recovering dynamic volumesA dynamic volume can be recovered• over any type of existing volume• to unallocated space of a disk group• to unallocated space of a basic disk.Recovery over an existing volumeWhen a dynamic volume is recovered over an existing volume, either basic or dynamic, the targetvolume’s data is overwritten with the backup content. The type of target volume (basic,simple/spanned, striped, mirrored, RAID 0+1, RAID 5) will not change. The target volume size hasto be enough to accommodate the backup content.Recovery to disk group unallocated spaceWhen a dynamic volume is recovered to disk group unallocated space, both the type and thecontent of the resulting volume are recovered. The unallocated space size has to be enough toaccommodate the backup content. The way unallocated space is distributed among the disks isalso important.ExampleStriped volumes consume equal portions of space on each disk.Assume you are going to recover a 30GB striped volume to a disk group consisting of twodisks. Each disk has volumes and a certain amount of unallocated space. The total size ofunallocated space is 40GB. The recovery will always result in a striped volume if theunallocated space is distributed evenly among the disks (20GB and 20GB).If one of the disks has 10GB and the other has 30GB of unallocated space, then the recoveryresult depends on the size of the data being recovered.
