How to calculate disk space requirements when performing restores with System Recovery.

How to calculate disk space requirements when performing restores with System Recovery.

Article: 100015861
Last Published: 2015-07-16
Ratings: 1 1
Product(s): System Recovery

Problem

When performing restores with System Recovery, the following calculation can be used to understand the minimum disk space required for a successful restore.

Total size of the source volume divided by 16 + the total used space on the source volume.

Example:
Source volume total size = 60GB
Total used space on source volume = 20GB
Calculation: 60/16 = 3.75 + 20 = 23.75GB

Note: The pagefile size is also a consideration. If the source volume contains a pagefile, you should also allow a 'buffer' on the target disk to allow for this. A 4GB buffer is recommended (so above example would be 23.75 + 4 = 27.75GB).
 

Error Message

The following error may be seen if the target disk does not have enough space for the restore:

EC950006: Destination drive is not valid

Solution

Article provided as information only.

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