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sizing C: drive for Windows Server 2008 future winsxs growth

I am setting up a Windows Server 2008 x64 server. I am concerned about future growth of the Windows SxS directory (%System Root%\winsxs), which will permanently store all updates that are ever applied to the server. For example see http://www.windowsreference.com/windows-server-2008/what-is-the-winsxs-directory-in-windows-server-2008-and-vista/.

Nowhere can I find a rule of thumb for sizing a C: drive on a WS2008 server, so that we can survive for up to 5 years of updates without running out of space. What would you recommend? This particular server will be used to run SCCM 2007 and SQL Server 2008, but we have a lot more servers coming that will be running a variety of stuff.

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Dirtpatch-Jenkins

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tigermatt

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tigermatt

That said, you should aim to put at least 40GB of space minimum on the C: drive from the outset, then add more as and when required.

-Matt

DscpTech

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I'd rather not expand as required. Our standard practice is to allocate at the beginning of the server's life. Also we don't want to have to come back later to add more drives, there might not be physical space for them. We're also considering upgrading some Windows Server 2003 boxes that only have 80GB or even 40GB drive C's and are not real confident that they will survive winsxs growth.