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Small Business Server 2008 Disappearing Disk Space Issue!

A new SBS 2008 Premium server was setup recently with a 100GB C: system drive and the remainder of the storage space allocated to a D:\ data drive on the main server.

For some reason the C: drive disk space steadily declined down to 50GB and now down to just 2GB free space, whereupon this started to affect system performance and services.

This is verified by right clicking on the C: drive and by selecting properties. However if the C: drive is opened and all of the folders selected, right clicking and selecting properties now shows that only 20GB of the 100GB is taken up. By selecting show hidden files and OS files, this increases to 30GB, but only because the 10GB virtual memory file is now visible.

By moving the system virutal memory file this increased the available C: drive space to just 10GB, which has now mysteriously increased to 14GB two days later.

What could be causing this issue and how can this be resolved?
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itcroydon
Asked:
itcroydon
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1 Solution
 
aisaudaliteCommented:
Hi,

do you have ShadowCopies being performed on C: ? This can take quite some space depending on the system configuration. You can check that in the C: volume properties.
Best regards
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itcroydonAuthor Commented:
The main problem was with WSUS, which seemed to be retaining multiple copies of each PC's windows updates!?

Having removed the backup copies of WSUS, the missing disk space has now re-appeared!
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itcroydonAuthor Commented:
WSUS was found to be the main reason for the low disk space
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