RH V Centos

Hi,

I have built out a new virtual production environment (VMWare, HA enabled, VMotion... all the bells & whistles) using RHEL5 VM's.

I have got another ESX host that I plan to use as a pre-prod environment. To save some costs on RH subs I was thinking about installing this environment using CentOS. I believe it uses the same kerenl as RH?

Has anybody got any thoughts advise regarding this?

Is it a good idea or not?

R,
D