Ivan Pepelnjak explains the difference between hot and cold VM mobility:
Another day, another interesting Expert Express engagement, another stretched layer-2 design solving the usual requirement: “We need inter-DC VM mobility.”
The usual question: “And why would you want to vMotion a VM between data centers?” with a refreshing answer: “Oh, no, that would not work for us.”
Read the complete story at http://blog.ioshints.info/2013/02/hot-and-cold-vm-mobility.html
