I was listening to Jeff Woolsey talk at TechEd North America 2012 and he brought up an interesting piece on Windows Server 2012 Hyper-V Live Migration. There are some interesting enhancements to Live Migration in WS2012 Hyper-V:
- Idle memory is synchronised between the source and destination host first. That makes sense. No point in moving changing memory first because it will change before the first of up-to-10 synchronisation iterations completes. So the inactive pages are moved first.
- After that, the active pages can be synchronised.
Live Migration is “70% faster” than it was in the past.