Munich  - Western Digital has beaten its rivals to the punch with the first hard drive capable of holding two terabytes (TB) of data.

The 3.5-inch SATA hard drive of the WD20EADS classification expands the WD Caviar Green line. The device houses four memory chips, each with a capacity of 500 gigabytes. Packed with a 32- megabyte memory cache, it is available for 300 euros (385.50 dollars), the company reported in Munich.

By utilizing variable revolution speeds and intelligent intermediate storage, the company says the new drive offers energy savings of four to five watts over drives that don't belong to its Green line.

Western Digital also released its WD15EADS drive along with the WD Caviar Green. It has a storage capacity of 1.5 TB. A price has not yet been set (dpa)