Hard drive hits 2 terabytes

The first 2.5-inch Constellation and Constellation ES 3.5-inch version of Seagate (US) storage device has the ability to automatically stop running when not in use, to save power.

Western Digital's Caviar Green 3.5-inch 2TB drive is available in the market.Photo: EnGadget.

Late last month, Western Digital also performed the world's first 2 TB drive, but this is a 3.5-inch SATA version for desktop systems containing 4 500 GB disks, 400 Gb / square inch, capable of 3 Gb / sec data transfer and 32 MB cache buffer for $ 299.

Seagate's Constellation and Constellation ES series use SAS (Serial Attached SCSI) interface with a speed of 6 Gb / s or SATA (Serial ATA) 3 Gb / s, including 4 7,200 revolutions / minute, 32 MB cache for the version SATA and 16 MB with SAS drive.

Constellation models will be available this quarter with a capacity of 160 GB and 500 GB and Constellation ES will be released in the third quarter of 2009 with models 500 GB, 1 TB and 2 TB. Product price has not been announced.