[CentOS] Clustering

> Whats your thoughts on Vmware server over esxi?
> Really do not want to have to budget for Virtualization if I do not have to.
> Thanks for any info.

Here is a comparison of VMware ESXi and Server notice that server
doesn't cost money.

http://www.vmware.com/products/server/faqs.html

both are proprietary
there are a lot of good FOSS alternatives such:

KVM (require a modern hardware)
Xen (need a patched kernel: available in centos repos)
OpenVZ (need a patched kernel: available in openvz repos, mainly for
VPS but personalty i use it)

HTH

-- 
Athmane Madjoudj