Currently, we are having one request from customer to create new Cluster between one ESXi host server with version of ESXi 5.1 Update 1(X3850 X5) and another one with version of ESXi 5.1 Update 3(X3650 M5). It is expected that EVC must be enabled during configuration for incompatible CPU types , and all located VMs must be shutdown before that. However, we are not sure if these two ESXi version are compatible enough to build cluster.. Much appreciated with any suggestion and instruction.
ESXi 5.1 Update 1(X3850 X5) with CPU type 4*Xeon 8C E7-4830
ESXi 5.1 Update 3(X3650 M5) with CPU type 2*Xeon 12C E5-2680