Why do we need all Diff Backups instead of the last one
Hi, I use backups since long time and I understud in regards of the Diff Backup, that all Diff-Backups containing all files since the initial Backup. That means to me, when I have the initial Partition Backup and the last Diff-Backup, I can restore a crashed System with the date of the last Diff Backup.
Now I have a crashed PC and the owner has, in regards of Disc space, several Diff Backups deleted, but he has the initial Backup and last Diff Backup. But when I try to run a restore, Acronis (2010 or 2011) tells me that some of the backups are missing and the restore failes. I must now restore the system to the date of the initial Backup which is long time ago.
What is the mistake in my thinking in terms of the Diff-Backup? I thought keeping every Backup is only necessary with incremental Backups.
Thanks and regards,
Bernd
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For those TI versions, my experience has been that the validation will fail every time but the restoration will succeed and must be done from the TI Bootable Recovery CD.
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The problem of failing validation when deleting intermediary differential(s) seems to be fixed with 2013 (I just tried).
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Hi all of you,
thanks for your infos and explanations. The good thing is, I don't have to rebuild my knowledge about the Backup methods!
New for me is the information that the Backup with full and a single Diff-Backup is functioning only when I boot from a CD (or also with F11 ?). I tried my Backup under Windows+Acronis and that was my problem.
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