Hi. I am going to create my first Ceph cluster using 3 physical servers and Ubuntu distribution. Each server will have three 3Tb hard drives, connected with or without a physycal RAID controller. I would have to be protect on a fault of one of this three servers, having as much as space possible, but without losing the failover security.
Shall I configure the hard drive on each server using RAID (5?) or not? Can you advise me the correct answer, or tell me what are the pro/cons of using or not RAID on physical servers in a Ceph cluster? Thank you very much! Bye.
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