If you're an administrator of systems that run SAS, you have probably already read up on How to Maintain Happy SAS 9 Users. If not, go read that first.
Now, are you looking to squeeze the best performance out of SAS on Microsoft Windows 2008 Server? Be sure to read this latest paper with additional configuration and tuning guidelines.
The paper describes how the Windows operating-system file cache can have a big impact on performance, especially under large I/O workloads. There are some tuning steps that you can apply; they are a combination of Microsoft Windows updates, configuration settings, and SAS system options.
The paper is the result of collaboration among SAS Technical Support, SAS R&D, and SAS customers, and Microsoft. It contains lots of good advice, plus links to related papers for further details.