No one is going to buy a 2-4TB HD for its speed. It is what it says on the box 2000GBs of space for your ':banana::banana::banana::banana:' collection.

Most of these will be used to store HighDef movies at 4-7GB/film and the fastest speed needed is to stream the video to your LCD TV.

At this rate I maybe dusting off the OLD HP 200GB Tape Streamer at the back of my server room at work to take home so I can back up my CD collection of 6TB worth of storage.