I am currently setting um VMware vSphere / ESXi 5.5 on a DellPowerEdge2900 and since it's an older server the following question came to my mind:

Considering performance should I install guest systems as 32bit or 64bit versions? Or doesn't it make any difference at all?

  • +0 because it doesn't belong here. This question is too old to migrate, but in the future, please post such questions on our sister site serverfault.com instead. You'll probably get more and better answers. – unforgettableid Mar 20 '17 at 1:59

Install the 32/64-bit OS versions required by your applications. Your 2900 will run either just fine. Specifically use 64-bit OSes where you need more than 4GB of virtual machine memory.

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