I have to ask. What you doing with the 90TB storage? That would be a hell of a NAS.

Looks to me like a small/medium business(es) cost minded approach for (Production/Failover) storage.

Its all for my own use. Get as high of quality media as possible and I like to keep it around for friends/family (I never delete anything).

My current largest system (20x2TB disk raid6) system (36TB useable) was starting to get full (around 80%). At work they were getting rid of a ton of old servers including quite a few 3U coraid servers that are basically nice $700 supermicro chasis that hold 15 disks each and included two 8 port SATA controllers and a mobo/cpu. I decided to just use the chasis and a SAS expander to hook it up to my original system with external SFF-8088 cables for more DAS (as that is a lot better performance wise).

My previous upgrades I replaced my original disks with larger ones so I immediately ate a good amount of the disk space. This time I am just adding 84 TB (84TB usable after raid) so it should last me at least 2 years maybe a little more.

Good stuff, you'd be able to reclaim a decent amount of storage and extend your usage out of the disks if you went with a different RAID setup. RAID6 is a bit much for personal usage IMO, besides, with the dual parity that's 2 disks you are losing per raid group, and the parity disk will always grab the largest disk for reconstruction in the event of failure. Not too sure if possible with your hardware/software setup but if possible deduplication would help you squeeze even more usage out of your storage ... just my 2 cents :tiphat: