Administrating more than 10 servers

[Ahmed Ossama]

Hi folks,

Lately I was put in charge to administrate 12 FreeBSD servers, and I was 
wonder what is the best way to 
administrate/monitor/follow-up/update/patch these servers such that all 
work like a clockwise with each other with the exact same updates?

I wrote few scripts that notifies me with system failure and updates, 
but I want to manage the servers more efficiently.

Any advice/guide is much appreciated.