Missing C drive space on SBS 2008

I've got a windows SBS 2008 that is down to .98 gb of available space on C:

C is a 60gb partition, virtual memory has already been pushed to the D drive.

In file manager if I select the C drive and click Properties, it only shows that about 58gb have been used.

If I then open the C drive and select all the folders/files in it and click properties, it only shows about 47gb used.  (Yes I have it set to show all hidden and system files)

Where is the differing ~12gb???

Shouldn't 60gb be plenty for a SBS 2008?  How do I find out what is grabbing all this space?
AshcorTechAsked:
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Cliff GaliherCommented:
60 is painfully small for 2008. My standard deployment was 120, and for 2011 it was 150. You'll always be fighting space with only 60.

As far as the space, right clicking is notoriously inaccurate, due to permissions and other system processes. Running a program like treesize as admin will be slightly better. Some things just don't show up though, like VSS snapshots. They rent technically a part of the filesytem, but do take up space.
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Radhakrishnan RSenior Technical LeadCommented:
Hi,

There are plenty of tools, where you can find out the folder size, this will help you to identify the issue.

http://www.foldersizes.com/

http://lifehacker.com/5915921/the-best-disk-space-analyzer-for-windows

I hope this helps.
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AshcorTechAuthor Commented:
ok... any free, safe, reliable partition resizers out there that anyone can recommend for use with server 2008?

I have ample space on the d partition... just gotta get to it.  the native diskmanager shows no available space to reclaim on D so that won't work...
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David Johnson, CD, MVPOwnerCommented:
gparted / Parted Magic are two
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noxchoGlobal Support CoordinatorCommented:
Do you have VSS snapshots enabled on this machine? If yes then disable them and remove already created ones.
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Cliff GaliherCommented:
I would strongly recommend against that. Snapshots are used by several products for backup management, including the built in backup for SBS. Disabling the, breaks new backups, and deleting old snapshots breaks the backup's ability to merge older differentials and will force you to reformat the media to use it as a backup target. There is a reason snapshots are not exposed at the filesystem level.
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Haresh NikumbhSr. Tech leadCommented:
check it out below link , details explanation is given for low disk space for SBS server

http://alloraconsulting.com/it-solutions/76-windows-server-2008-low-space
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noxchoGlobal Support CoordinatorCommented:
I would strongly recommend against that. Snapshots are used by several products for backup management, including the built in backup for SBS......
Actually the SBS server must have configured backup solution with backup and recovery plan. Which will take full backups to external storage such as NAS, FTP etc. Relaying on inbuilt volume snapshots is not the wisest approach. If they have already such backup solution (either from MS Backup or third party backup tool) then these snapshots are not needed. And my suggestion refers to the tracking the issue. Something is taking space which not visible and this could be mostly VSS snapshots to System Information folder.
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Cliff GaliherCommented:
I am not suggesting that volume snapshots be relied upon for backup purposes. I am saying that backups to external drives rely on persistent snapshots stored on the volume. Deleting those snapshots breaks the backup program's ability to do its job and often requires reformatting the target, losing all previous backups.

The following article does a pretty good job of explaining the complex relationship between the backup functionality and VSS. I know other 3rd party programs use similar algorithms.

http://wbadmin.info/articles/how-does-windows-server-2008-backup-work.html

Don't mess with snapshots. It almost always does more harm than good.
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Tony GiangrecoCommented:
First, 60 Gb is very small for a Windows 2008 server C drive. Our's uses 300 Gb partitions.

We use TreeSize to identify what files are on any drive. if your D drive has enough space for an app, I'd download it to the D drive and install it in d:\Program Files instead of C.

http://www.jam-software.com/treesize/

Start the program and view the files by size. Also you can use it to identify logs and temp files that you should clean up to free up space.

If you don't want to upgrade or reinstall onto a larger server, i suggest cloning the drives and replace them with larger one.

I'm the past we've use Paragon Partition manager to do this. Also, we have use Backup Exec to backup the entire drive and reinstall the partitions on larger drives. This process works very well.

http://www.paragon-software.com/small-business/?__utma=1.83230417.1379333547.1379333547.1379333547.1&__utmb=1.1.10.1379333547&__utmc=1&__utmx=-&__utmz=1.1379333547.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)&__utmv=-&__utmk=153315640
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AshcorTechAuthor Commented:
Thanks to everyone who answered.  

While this server is running fine except for the drivespace issue (I've managed to recover about 10gb) and I'm normally of the "if it ain't broke don't fix it" mindset, it is a 5+ year old server.  Might be time for a clean re-install in which case I'll re-partition more appropriately.
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