I plan on deploying a cluster of 2 physical servers running vSphere. The VMs in this cluster will be ran in fault tolerance mode. Can the vCenter server be ran as a appliance on the vSphere cluster, or does it require its own server separate from the cluster? Thanks!
We run ours in the cluster. We don't have too many issues.
See: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2003790 for vecenter installation best practices
and http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=10087 for special considerations related to running vcenter in a virtual machine.
If you have the resources on the two hosts, run vcenter as a VM. If you are tight on resources... you could push vcenter to a physical.