Yes, all hosts share all datastores. But I need to migrate them the the new SAN so I need to do a storage vmotion, not just change hosts. I am unable to do any storage vmotions on VMs that reside on the 4.1 hosts to the 5.5 hosts. We have had to shut down the VMs and migrate them. I need to be able to migrate them to the new 5.5 hosts with no downtime. My question is if I bring a 5.5 host into the 4.1 cluster, will I then be able to migrate VMs from that host to the 5.5 hosts?
I have attached a screenshot of the message I get when I try to migrate. This message leads me to believe that I can connect a 5.5 host to that cluster in order to perform a storage vmotion migration. (?)