I have inherited a Synology RS815+ with 4 - 6TB hard drives. The RS815+ is going to be used as a backup only, so it will be write intensive. My question is what RAID level is the best for this application. RAID 1 would seem the best for speed and redundancy but would not be the best use of all of the disk space, as I understand it.
If I could have 2 Raid 1's that would be ideal.
Take it easy on the replies, my understanding of Raid is at the beginner level