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[Discuss] Redundant array of inexpensive servers: clustering?

Bill Bogstad wrote:
> easier
> if you only have to do this on a per server basis rather then per session.

Which is one place where VM portability shines. State information is 
maintained within the VM container. It's still not perfect. A VM's 
checkpoint information cannot be updated in real time without incurring 
severe performance penalties so the application needs to be written to 
compensate (assuming that you want to compensate). Making everything 
atomic transactions is one way to do it.

Of course, this takes us back around to the design of the whole system.

Rich P.

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