I got into a big topic on apple servers a while back. To update that I would like to tell you that apple has a new model. It wont hold 20 TB of data only 720GB but has the G5 processor inside (eat that intel!!)
http://www.apple.com/xserve/
We do not have an article Yet But It wil come soon.
No one have anything to say about the Xserve G5?
MacWorld is nuts about it!
MacLover Is The Xserve still supported?
Apple offers email and phone support for the Xserve models. Service Kits are also still avaliable from the apple website.