12-disk SATA storage box for less than a grand
ExtremeTech has a review of the Norco DS-1220 eSATA storage box, which can accomodate up to 12 SATA disks. The price is pretty low (on Newegg.com it is $840 without disks).
I computed a small table that shows how much it will cost for a simple JBOD configuration. So, for less than $3000 you can get six terabytes in raw storage (therefore, 3 TB with RAID-10). Pretty competitive, and scales down nicely to whatever your storage needs are.
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From this table, it looks like we are approaching nicely (and even passing) the theoretical 50 cents/TB limit, starting with around 160/200 GB disks. So, when fully loaded, this array scales down nicely as expected.
The formulas above should be obvious:
- Total cost = $839.99 + 12 * disk_price
- Total capacity (JBOD) = Disk capacity * 12.