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What is filling up the server HDD?

Posted on 2016-10-05
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Last Modified: 2016-10-15
A server reports its HDD as being almost entirely full. Shows the server computer properties window

However, when I run Windirstat, to see what's filling the HDD, the size being shown by Windirstat is roughly 175 GB smaller than the correct value.The Windirstat scan of the server HDD
A. What's causing this discrepancy and how do I fix it?

B. What's filling up the HDD?

Thanks!
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Question by:ssvarc
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by:Dr. Klahn
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Suggest:  Start by running CHKDSK against the drive to see if the structure is corrupted.

If CHKDSK reports errors, get back to us here before trying to have CHKDSK fix them.
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Ivan earned 500 total points
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Hi,

I am using tree size free, so maybe you can try with it. Works ok, so maybe it can help you :)
https://www.jam-software.com/treesize_free/

PS: Did you start WinDirStat with Run As Admin?

Regards,
Ivan.
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by:Adam Brown
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Also, if you have redirected folders or user profiles that are not configured to allow administrative access, you won't see any information on that data, even if you run WinDirStat as administrator.
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by:ssvarc
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Dr. Klahn,

These are RAID 10 volumes (not single disks).
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by:ssvarc
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Ivan:

Thanks!

I had overlooked that! When I ran it as with Administrator rights it showed the complete HDD, along with 174 GB of Temp files...

Off to deal with and report.
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by:Dr. Klahn
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CHKDSK runs on anything that looks like a disk, whether it is a single drive, a RAID set, or a network drive.
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by:noxcho
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174GB temp files? Oh man, what are you doing with that server? :)
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by:Ivan
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Yeah, 174Gb :D

Anyway, problem solved :)

Regards,
Ivan.
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Author Closing Comment

by:ssvarc
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Running as Administrator showed the missing portion of the HDD, which allowed me to resolve the current issue.
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by:Lee W, MVP
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To get a COMPLETE list of what's occupying the space you need to run things that have permission to access all files.  I suggest you review my article on the topic to ensure you get everything in the future.

https://technet.microsoft.com/en-us/library/cc725890%28v=ws.11%29.aspx?f=255&MSPPError=-2147217396
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by:ssvarc
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Lee W:

Your link goes to a TechNet article about installing Remote Desktop Services Client Access Licenses.
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by:Lee W, MVP
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by:Dhanraj Pratap
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Use TFC (Temporary File Cleaner)

Its another matter, to first check how the disk is getting filled up.

If the source of your problem is temp files / folders, then use TFC.
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