1COLO FT/HA (COarse-grain LOck-stepping Virtual Machines for Non-stop Service)
2project is a high availability solution. Both primary VM (PVM) and secondary VM
3(SVM) run in parallel. They receive the same request from client, and generate
4response in parallel too. If the response packets from PVM and SVM are
5identical, they are released immediately. Otherwise, a VM checkpoint (on demand)
6is conducted.
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8See the website at http://wiki.xen.org/wiki/COLO_-_Coarse_Grain_Lock_Stepping
9for details.
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