Re: Vmax upgrade from 5875 to 5876.
"So if we have a host attached to the array, running SE 7.3.2, what will happen once the array has been upgraded? Obviously the server will still maintain it's access to it's disks but will it still be able to communicate with the timefinder clones? Will we still be able to talk to SRDF from the host? "
Once your array is upgraded to 5876 code, the solution enabler commands from unsupported SE would fail. I think you should first upgrade the hosts and then upgrade enginuity.