Aims to be a binary compatible “clone” of Red Hat Enterprise Linux (Debian). It’s like RHEL minus some proprietary additions and Red Hat support
http://www.servermom.org/complete-newbie-guide-to-build-centos-server-to-host-websites/
Why Choose CentOS For Your Server’s Operating System
http://www.interworx.com/community/why-choose-centos-for-your-servers-operating-system/
download for x86 : http://mirror.centos.org/altarch/7/isos/i386/
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