PSADMIN: An Odyssey of discovery
This is a new blog that covers pertinent technical issues, tips and architecture of PeopleSoft Infrastructure. It will also cover various PeopleTool sets, Enterprise Application modules, upgrades and industry best practices. Click here for more information.
Chili Joe has a very nice PeopleSoft blog. Lots of good technical stuff.
Check it out.
Hardware Sizing Resources
Here are some handy links if you're interested in coming up with a starting point for your fresh PeopleSoft installation or you'd like to upgrade your hardware: