Increasing WinSXS folder size on SBS 2008 causing problems

A few months back we supplied a SBS 2008 machine with a 60Gb C: partition which at the time we thought was too much. Now we are getting continuous problems with the partition running low on space and stopping Exchange from receiving emails. The server keeps throwing the well-known "The Microsoft Exchange Transport service is rejecting message submissions because the available disk space has dropped below the configured threshold" and if we restart the server it fixes it for a couple of hours.

WSUS downloaded content, users shared data and all company data is all on D:, as is most of the pagefile, yet C: still only has 2Gb free space.

I've used SpaceMonger to show me the biggest folders on the disk. The WinSXS folder is 8Gb in size and the remainder of the windows folder is 6Gb - C:\windows\assembly is 2gb and SysWOW64 is 1.4Gb approx.

 I've done a lot of reading and there is one source that has shown me how to move winsxs but it is very fiddly and has too many steps that could possibly go wrong, especially on a server.

The only other large file is SUSDB.mdf at 2.5Gb but I'm not able to log into the SQL instance containing this database to be able to move it.

Any suggestions - shrinking winsxs, moving susdb.mdf, anything would be appreciated. I'm not overly keen on re-partitioning a server in case it goes wrong half-way through.
smickellAsked:
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shauncroucherCommented:
I wouldn't look to do anything for the Winsxs folder. It is a particularly important system folder that will hold versioning for many updated components. Its not a good one to fiddle with.

So of 60GB partition you have accounted for 19.9 in your post

Perhaps moving the pagefile to a non-system partition may give you some more room. It seems like a pretty big system partition to me.

Shaun
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smickellAuthor Commented:
Only 1Gb of the pagefile exists on C:
Trend Micro server component takes up 2Gb. In hindsight this should have been installed to d:\program files. But again at the time we didn't think space was ever going to be an issue.
I've found a 750Mb folder full of logiles in c:inetpub\logs\logfiles\W3SVC1372222313 which I've moved off.
Most of the remaining folders are 1Gb approx but all essential un-movable folders like exchange\bin or update services\selfupdate.
Just been fiddling around as I've wrote this and now brought the free space up to 4.4Gb.

Moving SUSDB.mdf would be ideal now. When I open SQL management studio and browse for instances, it doesn't show up, I've tried logging onto servername\wsus and still nothing. Should I just uninstall WSUS and lock the 10 client machines to download updates from the web instead?
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shauncroucherCommented:
That is an option. I tend not to use WSUS for small sites unless they have specific needs to manage the application of certain updates / stop certain updates from being applied.

With larger sites it makes sense to use WSUS as there are obvious benefits with manageability, control and conserving bandwidth.

If the 10 PC's can be set to download all updates direct from Microsoft, then you can remove the WSUS and you may then find that space is freed. I believe there is a WSUSContent directory where the updates for WSUS are installed, is this on C: ?

Shaun
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smickellAuthor Commented:
No the wsuscontent was set to d: from the outset (as was everything else where the option was available), it is just the SQL .mdf file.
Would still like to figure out the SUSDB.mdf move, even if just for future reference.
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shauncroucherCommented:
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smickellAuthor Commented:
Thanks for the quick replies.
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