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As per title, will the processor compatibility option allow a live migrate between an AMD Opeteron 2435 (dual proc, hex core) and an AMD Opteron 8354 (quad proc, quad core)? We are out of capacity and wish to use a newer dual socket server rather than an older (yet much more expensive) quad socket server in our cluster.

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Just to clarify you REALLY mean VMWare right? "R2 Live Migration" is Hyper-V terminology but your tag says VMWare. –  Zypher Mar 5 '10 at 20:17

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Yes, you'll be able to vmotion as both chips are generation 3 so any of the three EVC modes (gen 1, 2 & 3) will work.

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hmm since it is r2 I'm assuming hyper-v so yes the live migration will work just fine!

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You do know, don't you, that live migration has some requirements as far as CPU compatibility between the two physical servers? That's what he was asking about, not about whether Hyper-V will support live migration. –  EEAA Apr 6 '10 at 4:30
    
yes I know all about proc compatibility issues with hyper-v. and If they are in the same family of cpu's then live migration works fine. –  tonyr roth Apr 6 '10 at 5:05

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