Yes, I just set up a pair of them for a client.
It is pretty much the same as the S8730, except there are a few more questions to answer, such as "Simplex" or "Duplex" when installing CM, and they also ask if you will have dedicated control networks as well.
search for document "03-603444, Issue 1, Novemeber 2009", "Installing the Avaya S8800 Server for Avaya Auro Communication Manager"
Mitch
AVAYA Certified Expert