Just learned Cisco has released a CISCO Unified Computing (UCS) Platform Emulator that you can run from your desktop without needing any hardware. Great for learning, documenting.
Just fill out the form here.
I learned about this emulator from here http://rodos.haywood.org/2010/07/ucs-platform-emulator.html which has more info and instructions.
You can get the guide for the utility as well.