"..Ultrastar 36ZX and 18LZX models feature 10,000 RPM and come in 36, 18 and 9 gigabyte capacities. With up to 8MB cache, giant magnetoresistive (GMR) heads, and a new cache handling routine known as Cache Optimizer, the 18LZX has an average seek time of 4.9ms, lowest in the industry. These drives are the first commercial presentation of glass platter based media. The drives should ship in volume next month. Pricing is not yet known.."