Hello fellow OMV'ers!
I currently run an HP MicroServer Gen8 with OMV 2.x on it (SSD boot drive & x4 2TB WD Reds). I have MDADM (OMV's out of the box RAID) setup as a RAID 10. MDADM does not support growing RAID 10 unfortunately which is understandable the way RAID 10 is laid out.
I am about to start building a new storage box, most likely a Supermicro 4U setup (24 3.5 bays). I am going to start it off with x4 4TB HGST Deskstar NAS drives. I do not really need the performance gain from RAID 10, so I am planning on doing a RAID 6 this go around. (I will take the hit of capacity vs reliability to avoid RAID5).
From my understanding MDADM does support growing RAID 6 pools, so my question is does OMV recognize and support growing RAID 6 pools when I add more drives down the line? And if so, what is the risk involved in growing a RAID 6(RAID 5 growing is pretty risky). I keep all my data backed up to Crashplan via the headless client running underneath OMV/on debian, but I would still like to avoid data loss because restoring backups over the cloud like that with my amount of data, even on a 100 fiber line, take forever. ( I will likely make an external local backup of all data when the time comes but still)
If this isn't the best option, could someone recommend a better path to take?