we have been using VMware for the past 3 years. Much to the fact that it's stable, reliable, robust , secure above all flexible. We are running 7 host's of Esxi 5.1 and around 70+ virtual servers.
We can twist the setup according to our demand. The configuration is so simple that anyone can easily handle.
I do neither agree nor disagree with it .
The licensing system EMC uses, based on the number of sockets, for me is
just stupid and unacceptable!
It punishes high density, instead of awarding it like every other
For several years my deployments were based on XEN from Citrix (which I
consider technically superior compared to VWWare in every single aspect!), but in the last 4 years I am using a KVM based system called Proxmox (www.proxmox.com) and it completely satisfies my needs.