Why does defrag analysis always suggest running degrag again?

I was running defrag on my W2003 Servers and after it defrag the first time, when I click to Analyze after the defrag, it suggests degragging again. Is this normal? Will it actually defrag again? Does it make sense to keep defragging until it does not suggest defragging? I had turned off all SQL Services and will not start them again until defrag is done. I have seen several notes about not applying 3rd party defrag utilities on a server. Is the Windows version sufficent or are there ones certified for servers?
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Hello !

it depends on what kind of storage you have (RAID, SAN, whatever...) and what's stored there. In the report, it should state what files were not defragmented. Usually, exclusive-locked files cannot be defragmented. Usually the page file, which is quite large, cannot be. Some other files (databases, log files...) may also be locked.

Could you provide us with more detailled information ? Like posting the defragmentation report for example. This would help us understand what's happening.

Alternatively, if your server can be taken offline for a while, you could boot a BartPE disk and defragment from there.


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A few thoughts:

1.  If you have many large files on the disk that are larger than the available blocks of free space, this behavior may occur and can be ignored.  An example in my case was VMDK files in excess of 100 GB each.

2.  You don't have Disk Compression enabled, do you?  I wouldn't recommend that on a production server.

3.  Have you tried running CHKDSK just to be sure there are no serious issues with the volume?

4.  I believe there are Business/Advanced editions of Defraggler available, which has been a Godsend on workstation OSes.  I haven't heard a strong recommendation against it, but would recommend using with care as you get started.
rwheeler23Author Commented:
Will try the suggestions. I had disabled all SQL services and just was wondering each time I ran defreag it would tell me to defrag again.
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Windows Server 2003

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