Q. If I'm using vSphere Virtual Center but still have 3.5 ESX hosts, do I still need a License Server?

A. vSphere uses a new centralized license reporting and management structure, which means that if all ESX hosts are upgraded to version 4, no license server or host license file is needed. ESX 3.5 hosts still require access to a license server, which can be used by the vSphere Virtual Center by configuring the License Server option under Administration—Server Settings, as shown here.

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• Q. I heard that VMware ESX allows you to overcommit memory, which means it pages out the memory of guests to a file, giving very poor performance. Is this true?
• Q. Does VMware ESX 3.5 require a 64-bit processor with hardware virtualization features?
• Virtualization Rematch
• Review: VMware ESXi