As someone essentially in charge of petabytes of storage; one of these will not safely, securely or successfully do the job alone. I used to use this method wi

As someone essentially in charge of petabytes of storage; one of these will not safely, securely or successfully do the job alone. I used to use this method with normal 4U server chassis and 20 x 1.5TB hard drives. Multiple issues and availability problems have meant now we use multiple 2U chassis with 4 x 2TB drives to serve the same job. It works out cheaper in the long run :) (It works for Backblaze because they essentially have the same thing but scaled up massively)