I want to connect a 2010 Mac Pro to an Xsan network, but this is proving somewhat frustrating as the Xserve running the Xsan metadata controller is still on 10.5, but the new Macs won't boot anything but 10.6. The documentation for Xsan seems very specific that the MDC must be running the same or higher version of both the Xsan software and the OS in order to work properly. Unfortunately, upgrading the Xserve is not an option at the current time. The version of the Xsan software can match, but there's no way to get the OS versions to match. That being said, I know somebody who has tried this configuration, running 10.6 on a client for a 10.5 server, and he said it seemed to work fine. So what's the worst that could happen? Assuming I manage to get it to connect, am I asking for trouble down the line? Is there somebody out there who can relate a tale of woe resulting from not following Apple's seemingly pedantic requirements to the letter?