online defragmentation

Discussion in 'Active Directory' started by Guest, Nov 24, 2005.

  1. Guest

    Guest Guest

    Is there a way to change the schedule of this online defragmentation? Which
    I believe by default is running at 12 hours interval!
    Is there any good documentation on this anywhere?


    Guest, Nov 24, 2005
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  2. Guest

    Guest Guest

    Do you know if this is by Hour / Minutes / Second ?
    Guest, Nov 24, 2005
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  3. Guest

    Guest Guest

    Is there a maximum value we can put?
    What is the formula to calculate the max value?

    (note: I found this attribute is in hour.)
    Guest, Nov 24, 2005
  4. Yes, it is in hour (min 1 hrs, default 12 hrs)

    The garbage collection is dependent onn another attribute -
    tombstoneLifetime (60 days default)

    The maximum garbage collection interval is one-third of the tombstone
    lifetime (in hours). So if you set tombstoneLifetime to 30 days and
    garbageCollPeriod to 300 hours, your actual garbage collection period is only
    10 days, or 240 hours

    Maximum Garbage Collection Interval = ((tombstonelife * 24) / 3)

    Wong Tuck Wah, Nov 24, 2005
  5. Guest

    Herb Martin Guest

    Why do you wish to do this?

    You wouldn't be likely to have a LOT of fragmentation anyway
    but if you put it off it will be WORSE when it is (eventually)
    Herb Martin, Nov 25, 2005
  6. Guest

    Guest Guest

    I was going to change the defragmentation frequency to every 24 hrs or
    every week (or so) and leave the tombstoneLifetime with default.
    Can I do that?

    By the way, will the online defragmentation process has any impact on server
    performance, ie. slow down / inhibit server response to directory lookup /
    query ?

    Guest, Nov 25, 2005
  7. I was going to change the defragmentation frequency to every 24 hrs or
    As long as the max time is less or equal to 1/3 of the tombstone life time,
    it is possible. In your case, the tombstone is default 60 days, so max
    garbage interval is 480 hrs.

    Will you experience performance issues when you perform a harddisk defrag?
    The analogy is the same, that's why we don't set the online defrag to be so
    But I believe it will not be so bad as to inhibit access.
    Wong Tuck Wah, Nov 25, 2005
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