August 2009
Intermediate to advanced
696 pages
22h 16m
English
Content preview from Mastering VMware vSphere™ 4
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10.8. Ensuring VMotion Compatibility
In the section "Examining VMotion Requirements," I discussed some of the prerequisites that are required in order to perform a VMotion operation. In particular, I mentioned that VMotion has some fairly strict CPU requirements. Specifically, the CPUs must be from the same vendor, must be in the same family, and must share a common set of CPU instruction sets and features.
In a situation where two physical hosts exist in a cluster and there are CPU differences between the two hosts, VMotion will fail. Because VMotion will fail, DRS will also fail to function in any sort of automated fashion. (It would still make recommendations regarding intelligent placement and migrations, but of course those migrations would ...
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