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How to backup Volume Shadow Copy

Posted on 2011-02-22
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Last Modified: 2012-06-22
I backing up at the moment ten days to a tape drive and because I cannot see the volume shadow copy files, I cannot choose to just backing up the last day of the backups.

How can I backup just the last day? Because every day Im backing up to tape drive 10 days of data instead of just backing up the last day.

Is there any way in Windows Server 2008 R2 to do that?
Thanks very much,
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Question by:M7K
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5 Comments
 
LVL 96

Expert Comment

by:Lee W, MVP
ID: 34953294
You can't backup shadow copies - shadow copies are block level changes in files, not complete files.  The idea behind Shadow Copies is to reduce the times you need to go to tape by allowing you to recover recent versions of files and folders.
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Author Comment

by:M7K
ID: 34953357
so the question is.. the volume will grow till the end of its capacity or what? I dont really get it.
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LVL 96

Expert Comment

by:Lee W, MVP
ID: 34953526
Depends, what did you set the copies to do?  By default, I think it uses 10% of the disk.
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Author Comment

by:M7K
ID: 34959355
And can you restore a volume shadow copy if you loose the drive but you have a backup of that drive?
And also, is there any way to use volume shadow copy to restore AD?

Thanks a mil
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by:
Lee W, MVP earned 2000 total points
ID: 34960350
> And can you restore a volume shadow copy if you loose the drive but you have a backup of that drive?
No.  As I stated, Shadow copies copy changes at the block level.  when you restore, there is nothing to guarantee your not restoring to the same blocks so the shadow copies would be useless.

> And also, is there any way to use volume shadow copy to restore AD?
Never tried... Shadow Copies protect files I suppose it's possible the files containing AD could be restored... but it's not a recommended and I doubt it's a supported option.

Shadow copies are NOT meant to be your primary backup.  They are meant to reduce the need to go to the primary backup to restore data.  You cannot take shadow copies off site, you cannot backup shadow copies, and it only keeps a certain amount of copies.
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