We have recently acquired a PowerEdge R900. It is VT compliant and has hardware on the ESX HAL. We are already an ESX3.5 environment with a few R900's in ESX3.5 HA/DRS clusters and some 2950s also in a separate HA/DRS cluster. We have VirtualCenter2.5 Update 6.
This new server isn't really needed at this time for any specific reason BUT I would like to install vSphere4 on it and introduce it into our 3.5 environment (I realize it won't be a functional vSphere4 server until VirtualCenter and the rest of the ESXHosts are upgraded but I wanted to have it already in the environment as a standalone host for the time being). Do you see any issues doing this?