That confuses me. The only vaguely affordable way to get such a large capacity would be to use NAND Flash, but that is way slower than modern hard drives. With a very efficient control algorithm you can get somewhere between 1MB - 2MB/sec out of most devices.

It'll would be interesting to see a standard benchmark of these solid state drives. The company quote data rates from 4MB/sec to hundreds of mb/sec and I can't help but think that the second figure is based on 100% cache hit.

Rob