Question : WHat is the recommended size for the swapfile for my SQL Server ?

I have an SQL Server 2008 R2 Enterprise running on Windows 2008 R2 Enterprise. The system currently has 32 GB of RAM and is attached to a SAN. What is the recommendation for swap file size, do I need a swap file at all ? I can see that soon after starting the server and getting some work from the Datawarehouse application, SQL Server takes all available RAM, however does not seem to use the swap file.

Answer : WHat is the recommended size for the swapfile for my SQL Server ?

It is not so much a SQL thing as much as a Windows Op Sys thing.

If Windows recommends 48gig, then I always default to the Windows recommendation. It reserves and holds contiguous space, so, can never really be too big, so long as disk space is not a problem.

The *hope* is it doesnt need half that space, but, that is another story altogether :)