نظر دادن به این تاپیک کاره هرکس و من نیست !
لینک زیر کمی کمک میکنه :
http://www.cyberciti.biz/faq/centos-vs-redhat-enterprise-linux (http://www.cyberciti.biz/faq/centos-vs-redhat-enterprise-linux)
* CentOS Linux is based on the source code of Red Hat Enterprise Linux.
* Advantages of Centos is user community, quickly rebuilt, tested, and QA'ed errata packages.
* CentOS does not provides the RHN style support. It depends upon community mailing lists, forums and 3rd party sites to provide support.
* If you need access to RHN or support service go for Redhat otherwise CentOS will help you.