David Marshall over at
vmblog.com just posted a video of his experiences with the current (granted, beta) state of LiveMotion under Microsoft's Hyper-V virtualization engine. It looks like they've got a long way to go before we reach the same level of functionality and reliability that we currently enjoy with VMware's VMotion.
Check out the video - it would appear that Hyper-V's solution to migration virtual machines is to put them into sleep mode first. Not really a viable solution for managing production machines.
Bottom line is that migrations are not transparent - all live network connections are dropped and some client software needs to log out and log back in after a migration, don't even think about running Terminal Services or Citrix Presentation Server (sorry, XenApp Server) since you'd kick everyone off if you needed to do a migration.
By contrast, VMotion is completely transparent and done live without interruption of service to network clients.
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