I am going to be installing an IPO 500V2 with IPO Advanced Edition for the use of the Contact Center/Call Center. We are planning on installing the VM Pro on a server, the ACD/IPOCC on a server, and the Call Recording will have it's own dedicated server as well. I have found specs for all except for the Call Recording server. Any of you guys have any ideas. I know that the Call Recording server runs on the Avaya provided Linux but that is about it. Any help or tips would be greatly appreciated.

I assume you are talking about the "Contact Store" software?

Not sure if there is a official spec sheet, there may be but have never looked for it.
We install a good beefy PC (nothing special) that runs VM pro/Contact Store and it works like a charm.