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  RAID 5 defrag?

  Posted by Eric Jurgenson on October 24, 2008 at 8:05 pm

  I have an 8 TB RAID 5 array (16 SATA drives) for my video drive. My plan was to not delete any files until the drive was 75-80% full, and then delete the stuff I didn’t need all at once (probably 50% of the material). My idea was that this would help prevent fragmentation caused by frequent deletion.

  So now I’m at that point. My question is – does it make sense to defragment a RAID5 array to increase performance after I delete the files? I know you should defrag single drives, but I’m not so sure about large RAID arrays.

  Should I get special defrag software, or will the XP defrag work?

  Vince Becquiot replied 17 years, 6 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Vince Becquiot

  October 25, 2008 at 3:46 am

  Windows see the array as a single logical drive, so no issue there.

  I often defrag our RAID array (although I only have 8 disks), I can’t think that it makes a difference.

  Does it improve performance that much? I honestly can’t tell you, that but I can tell you that the process will take a long, long time, especially with HD files.

  Vince Becquiot
  Director | Editor

  Kaptis Studios
  San Francisco – Bay Area

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