Western Digital's RE2 750GB hard drive
 

Based on a Caviar SE16 750GB foundation that we already know delivers phenomenal performance with low noise levels, the latest RE2 benefits from tweaked firmware, RAID optimizations, more extensive reliability testing, and extended warranty coverage. Read on to see if those extras are enough to elevate this enterprise drive above not only its desktop counterpart, but also the fastest drives on the market.

http://techreport.com/articles.x/13253