TechNet has an interesting article on the limits of SharePoint Server 2007 that they tested on a single instance of SharePoint Server. Includes the Test environment, results and guidelines.
Some guidelines of note:
- Up to 250,000 web sites per collection
- Up to 5 million documents per library
- Acceptable response time to browse to a document library: <3 seconds
(Via Mick Badran)
Technorati Tags: SharePoint, Performance limits