3 hours ago
Merging doesn’t merge together all the files that were once in a single backup. If you merge backups, the content will be shrunken to that of the newest version.
Example:
- Full backup 1: One huge file A gets created
- Diff backup 2: A small file B gets created and file A is deleted
- You merge both backups: File A will be gone, only file B exists
So the merged backup will only contain the files of the latest version that was included. This is to save space: In this example you now only keep one full backup without the huge file A but it will still have file B as that was added in the newest backup you did.
If merging would keep all the files of all backups, you wouldn’t save space and this would create a Frankenstein built of all the individual backups because both files would be restored, a state that never existed. Windows might not even run in that restored version, you can’t know for sure.
Another thing to think about: What if one file was changed between the backups? How would you handle that merge then? You can’t keep both versions so you would also only keep the latest version of that file.
Hope that helps
Example:
- Full backup 1: One huge file A gets created
- Diff backup 2: A small file B gets created and file A is deleted
- You merge both backups: File A will be gone, only file B exists
So the merged backup will only contain the files of the latest version that was included. This is to save space: In this example you now only keep one full backup without the huge file A but it will still have file B as that was added in the newest backup you did.
If merging would keep all the files of all backups, you wouldn’t save space and this would create a Frankenstein built of all the individual backups because both files would be restored, a state that never existed. Windows might not even run in that restored version, you can’t know for sure.
Another thing to think about: What if one file was changed between the backups? How would you handle that merge then? You can’t keep both versions so you would also only keep the latest version of that file.
Hope that helps
