My average cost per usable TB is around $11 per TB, but most of my drives are smaller used SATA/SAS drives. My main pools come out to about 450TB of usable storage.
Edit, Copy paste from the post I never got around to making.
Main Pools 2023, are on 24/7/365 - 360-420 Watts.
I use 3 UPS units to protect them.
| Name | Usable TB | ZFS | vdev | Drives per vdev | Drive size | Estimated total cost | Content | Notes | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Main | 65.90TB | RAIDz2 | 1 | 8 | 12TB | $960 | Content | New drives | ||||
| Main | 76.50TB | RAIDz2 | 1 | 8 | 14TB | $1200 | Content | New drives | ||||
| Main | 87.86TB | RAIDz2 | 1 | 8 | 16TB | $1120 | Content | reconditioned drives | ||||
| Backup0 | 176.91TB | RAIDz2 | 2 | 12 | 10TB | $1500 | Backup | used + new drives | ||||
| Temp0 | 12TB | EXT4 | 1 | 1 | 12TB | $120 | Temp | new drive |
Main pool - 261.26TB, This is all 1 pool, but I broke it up on the list since I use 3 different drive sizes.
Total usable TB : 450.17TB
Total Cost : $4900 / 450.17TB = $10.89 per usable TB, not bad considering the amount of drives were purchased new.
To quickly get the version installed.