I was just given a Dell R720xd with 160 GB memory and 12x 900 GB drives that I plan to deploy as my home mail/file/backup server to replace an aging Supermicro server running CentOS 7. Yeah, it's gross overkill for that and I expect to tuck most of the drives away for spares. How should I RAID and partition this beast for maximum reliability? My current C7 system is using 1 TB of 2 TB capacity on the root partition (4x 1 TB drives in RAID 10). /boot is 300MB/50GB. Memory and swap is 8GB each.