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Titel
Can you do a Bare Metal Restore to a Smaller Partition? -
Beschreibung
This article describes restoring data to a smaller partition using Rapid Recovery. Using bare metal restore (BMR), it is possible to restore data to a smaller partition than was backed up originally. This process is only available when doing a bare metal restore and if the partition containing the data is able to shrink. Live recovery does not have the ability to restore to a smaller drive.To perform shrink operation, the following is checked:- Ensure that volume supports shrinking: it has to be either Linux SWAP or Windows NTFS volume.
- Calculate the volume free space
- Calculate the total space to reclaim
- Calculate the new volume size
Important note: Some volumes cannot be mapped to any disk even after application of the above rules. If Windows determines that we want to shrink the volume more than it is reasonably possible, an error will be shown, saying that even though automatic mapping was able to map the volumes, Windows cannot shrink volumes to the extent required, thus automatic BMR on this environment is not possible. On the other hand, if Windows determines that our shrink request is valid, the partition request is accepted.Additional information on windows shrink operations: https://technet.microsoft.com/en-us/library/cc731894.aspx -
Lösung
When restoring through the Restore Machine Wizard, the option for automatic disk mapping must be used to be able to restore to a smaller partition. The manual mapping will not allow to restore to a smaller drive. On the Disk Mapping Preview page, the amount to shrink (% of original size) will be displayed before proceeding with the restore.If the shrink size is not possible, you will notice the restore wizard take longer than normal to display the results. The event viewer >Application log will contain defrag events about the shrink analysis. If the shrink request fails, the defrag events will contain information about the last unmovable file and the shrink estimation.Additional information:- Performing a bare metal restore: https://support.quest.com/rapid-recovery/kb/189589/bare-metal-restore-to-a-smaller-partition
- Creating an Rapid Recovery boot CD: https://support.quest.com/rapid-recovery/kb/184600/how-to-create-a-rapid-recovery-boot-cd