The thing is, why would you implement XSan 2.2 now? Maybe read the DAS to XSan thread. There are less expensive and faster ways to do storage than XSan now. I pretty much feel that Apple giving it away in Lion/Mountain Lion is entirely for existing XSan users to be able to move forward to newer versions of the OS. But as a new implementation, with the Snow Leopard version? Kinda rough justifying the cost.