And because the whole system can store so much information, back-up copies of everything in it can be made internally in more than one brick, meaning that such a failure destroys no data.

ECONOMIST: Data-storage systems

With 15 terabytes of hard disk storage, the Watson system at Rensselaer will store roughly the same amount of information as its Jeopardy!

ENGADGET: Watson heading to college, honing administrator-pranking algorithms