it does not matter really, it's your call. When you get to new site first thing that needs to come up is your MDS switch. You will need to get on the console and change the IP address once it's up. Second bring up the VNX, change IP if you have not done so already and lastly bring up the servers.
I will be moving VNX to another location and need to know how to change IP addresses.  Please provide procedure.   Also, the servers and cisco mds switches IP address will also be changing, what effect will this have on the VNX? Any additional changes I need to make?  THanks
How to change IP address VNX 5100 (Block)