That's a chassis for 2.5" disks so you'd be looking at 60x1TB disks, and that would mean 3 of those enclosures. Now rack them somewhere and add power - still much more than a couple of grand, we haven't even paid for the disks yet...
Yeah, I was a tad hyperbolic in just referring to the disks. I would expect the costs to be around $20/GB/year when you also factor in power - bigger drives are making a difference, but the other factors always cost more than the disks themselves.
It doesn't change the fact that 60TB is tiny for a company whose every product involves storing enormous quantities of data and serving them at monstrous scale.
And according to the GFS paper their are three copies of every chunk in a GFS cluster so that is 180TB, and they probably don't depend on one GFS cluster to meet their availability guidelines so if you had two that is really 320TB (180TB * 2).
And the amazing part is if you are in an open event where Google is talking about their infrastructure in general terms you will realize that that has to be mouse nuts compared to the amount of 'spinning rust' they have going on at any one time.
