It make no sense today for me anymore…I found more downside than real use of my RAID5 array.
My setup: 5 disks of 22TB in Raid 5
- Data Organising is estimated to 20 days!
- Rebuild time of RAID5 is unknown never had to do (yet) :-)
- Disks never sleep in BTFRS, power cost is here 0.30 per kWh
- Constant noise of 5 disk clicking instead of only one or two when using
- Do I need 80TB of continuous stiorage? Not really with 2700 movies= 12TB, 8000 TVShow episode= 14TB, most is still in h264 few in h265 and really really few in AV1 (fantastic by the way)
- I dont care about Media, and rebuild everything on a 10GB Fiber most of it automatically. Most of my private stuff is on 3-2-1 encrypted anyway
- High availability is not a topic, I’m alone using this box. And even, my Homelab is best effort not 24/7
I have another NAS full SSD, with 8 SSD but I hate the nature of RAID in SSD: they die unexpected most of the time. I prefer to lose 4TB then put 30TB at risks if 2 or more SSD decide to stop working
So maybe duplicating on another disk in a mirror (rsync) is maybe better for me
This is why I went back to a simple snapraid and Mergerfs setup. It only spins up the disk it uses, slow but a lot more efficient. It also is based on dead simple ext4 drives which are all still accessible even if the software fails; it’s all file level. I’ve lost many drives over the years and have successfully rebuilt every time.
Scale is about the same as yours, about 24tb made up of 4 and 10tb disks. It’s unglamorous, it’s old school but it works and is reliable.