SBS2008 - Drive C: is al most full. Need to find what is taking the space

The C: Drive (199GB partition) had 16.5 GB yesterday...today it has 4.3 GB.   I'm trying to find out where my drive space has gone.  

- The server want to download and install upgrades. (But I'm afraid to let it).
- This server has mazy pro on it but not enough purchased space to run the off-site backup    
  properly. Client knows, but has not taken care of it.
- Went into the console and the shared folders are already moved to drive E:. (728 GB Partition with 648 free).

What is my next step.
JoemtAsked:
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JoemtConnect With a Mentor Author Commented:
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David AtkinIT ProfessionalCommented:
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rindiCommented:
Most likely your transaction logs haven't been cleared. They only get cleared after a successful full backup. Besides that, I don't think mozy backup is exchange aware, so even if it should be successful with a full backup, it is unlikely that your exchange transaction logs will be cleared.

I suggest you use the integrated backup utility to make a backup to a USB disks, if it is successful, the logs should get cleared and after that you should have enough space again.
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David AtkinConnect With a Mentor IT ProfessionalCommented:
I would agree with rindi with regards to the backup application. It maybe worth considering moving to Windows Server Backup with USB drives.  If the issue is with the transaction logs then this should resolve the problem.
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Shahnawaz AhmedConnect With a Mentor Technical Services SpecialistCommented:
You need to use Treesize , a tool which will give you details of every folder and what contained what data.
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JoemtAuthor Commented:
Ok, I have started a backup of the system.  Hopefully when it's thru I will have some space.

Thank you everyone.
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JoemtAuthor Commented:
I had a external drive on the system using the sbs2008 backup utility. Apparently even though I wanted just a single backup on that given day.........it had been backing up the whole time according to the log in sys.

So I have it backing up as I have removed the other drive with all the backups on it.

The temp directory has 119 GB of space in 7K files plus CAB_476_2 files.

Can I just delete the files out of the windows temp directory?
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rindiCommented:
The temp directory should be no problem at all. Another directory you can clear (but don't delete the directory), is the C:\Windows\SoftwareDistribution\Downloads. Here are all the windows updates that have been downloaded and installed, so it's contents can easily be removed. Should any windows update still need to be installed, it can always be downloaded again.
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Olaf De CeusterCommented:
Please run the BPA for answers.
http://www.microsoft.com/en-us/download/details.aspx?id=6231
If you don't do a proper BU the Exchange logs won't be purged either and keep growing.
Hope that helps,
Olaf
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David AtkinIT ProfessionalCommented:
Good to hear.  Glad you resolved your problem.
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JoemtAuthor Commented:
Because it was the exact problem. It does not appear to be a common problem.  But the thread I added fixed it/
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