Hi, Ideally as we all know, these products are best installed on servers. I'm looking to create test networks locally on my macpro, to test configurations and deployments before implementing it on live environments. There are several threads about running fusion/parallels, but only with 1 or 2 concurrent images. I'm looking to be running around 6, or more (obviously dependent on RAM) The reason why I want to try this out on a MacPro instead of a server or something along the lines of the HP Z400/Z600 is due to noise/usability, as I also build websites & do basic media aspects, plus OSX is a great OS to utilise too. MacPro's aren't on the compatibility list of VMware, but the hardware is basically server based and there are some threads on other forums from users testing this out on 2008/2009 mac pro's. I'm therefore looking to purchase a 2010, however, unsure of to go for a quad/hex or octo. Quad - good robust Mac Pro, specially the 3.2, 32gb RAM (max I can afford) on 8gb sticks. The Hex is excellent, a lot more money though, again, 32gb RAM. The Octo seems to be good, even though lower clock speed, as there are more cores, maybe more efficient on multi tasking. What are your thoughts on this? I will also be purchasing an SSD and be utilizing a Software RAID. Again, this is for testing purposes, not a live environment. Many thanks in advanced, Gabi.