In SRM 5.1 documentation one of the limitations listed is as follows:
When protecting virtual machines with memory state snapshots, theESXihosts at the protection and recovery sites must have compatible CPUs, as defined in the VMware knowledge base articlesVMotion CPU Compatibility Requirements for Intel ProcessorsandVMotion CPU Compatibility Requirements for AMD Processors. The hosts must also have the same BIOS features enabled. If the BIOS configurations of the servers do not match, they show a compatibility error message even if they are otherwise identical. The two most common features to check are Non-Execute Memory Protection (NX / XD) and Virtualization Technology (VT / AMD-V).
Can you overcome this limitation by using EVC mode on the local and protected clusters?