http://www.apple.com/xserve/The 1U Model:
1.33 Single or dual processors
Slot loading CD Drive
Up to 720 GB (4x180 max)
Dual gigabit ethernet standard
Firewire 800
Base model $200 cheaper
The 3U, 14x Drive Storage Unit:
14x Drives of 180 GB = 2.52 Terabytes max
RAID Modes: 0, 1, 3, 5, 0+1
Cache battery backups
Dual fiber channel connections
Great monitoring & management system (pretty much the same as the XServe's)
Crazy Architecture:
[ February 10, 2003: Message edited by: The Muffin Man ]