[CentOS] Looking for assistance

The only fully bare-metal ready backup solution I know of for CentOS
is mondorescue.
IME, it's the bare-metal recovery that is going to be the hardest
requirement for you to meet (at least for free-as-in-beer software),
the rest can be done by many different pieces of available software:
backuppc, bacula, rdiff-snapshot, dervish etc.

Cian