HP have finally gotten round to writing a document which outlines “VMotion Compatibility Groups” between different models of their server hardware. From their site:
“VMotion Compatibility Matrix
The ProLiant servers listed below are organized into VMotion compatible groups [VMotion to and from any Server/Processor combination within a group]. This grouping list will continue to be updated as new processor and server combinations are released by HP. Please use this document as a guideline with the understanding that new processor releases and processor steppings affect the content and compatibility listed by this document.