Your comment "going from ESXi hosts with FCP-attached storage to VxRail (vSAN)" is a little unclear. I'm guessing FCP-attached storage means Fiber correct?
If so, we currently have hosts connected to our Compellent SAN via Fiber and we have VxRail also connected via Fiber...both running on the same network, so you're saying that as long as the Layer 3 network connectivity is configured correctly I won't need anything else to connect them to the new vCenter?
I take it that even if the IP's are different on these hosts, as long as the network is configured to allow them to communicate with each other then I can do this, did I understand you correctly?
What about the two SANs not seeing each other, if I can disconnect a host and reconnect it to new vCenter, how would this work? I'm thinking that the SANs would need to see one another to allow vMotion between them?
I might be over thinking this, but just want to be sure I'm understanding you correctly...again, thanks for all your help. As for all the other things pointed out in your blog, yeah I understand but on that end we have no worries at this time...thanks.