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What are the implications of implementing Volume Shadow Copy?

Posted on 2007-04-04
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Last Modified: 2010-05-18
I am considering implementing Volume Shadow Copy on my new server.  What concerns (security, or disk space, etc.) should I be aware of?  What requirements are there?  I will be enabling it on a Small Business Server 2003 server.  Thanks for any help that you can give.   I do have a Raid 5 volume on this server with 5- 500 GB drives including the boot drive.
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Question by:jmattson30
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Expert Comment

by:Lee W, MVP
ID: 18851911
The service takes deltas in files so that it doesn't actually backup the entire file.  It backs up only the changed sections of it.  Security wise, it should be as safe as having the file on the server... Disk can be a concern and there CAN be disk performance issues during the time the copies are made.  If the disk is VERY busy, sometimes copies WON'T be made.  In addition, I would strongly encourage purchasing another disk (separate spindles) to allow better performance and be sure to set the other disk as the place to store the copies.  If you can't do that, you can still use them, but the performance considerations will be more pressing.  

Just remember, Shadow Copies and RAID are NOT a substitute for backup - they are GREAT at helping to reduce down time and lost data due to negligence, but they can't save you from corruption, fire, or other hardware problems.
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by:jmattson30
ID: 18851971
Thanks Leew,

I appreciate the information.  If I do implement the Volume Shadow copy service and there is a performance decrease, is it easy to reverse or disable VSC?
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Lee W, MVP earned 125 total points
ID: 18852028
Very.  Just disable it on the drives.  Couple clicks and you're done.  You can also reduce the number of copies made.  I try to have them made every 3 hours from 8am to 8pm.  Helps prevent problems from accidental deletions and overwrites.  But you could run them just at midnight (or after hours) once per day.  This would essentially give you a single online available backup that users could restore themselves.
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Author Comment

by:jmattson30
ID: 18852076
Great!  I will give this a shot and see what happens.  Thanks for the help!
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