This 2.5-inch hard disk drive from Seagate Technologies is available in 250GB, 500GB and 1TB capacities. Designed for storage arrays and enterprise data centers, these drives operate on less than 6.4 watts and have a 7,200-rpm spin speed. The enterprise-class drive in the Constellation family, the Constellation ES, also goes up to 2TB.
3Western Digital Caviar Green
Western Digital’s Caviar Green is the largest single internal hard disk drive available on the market. Available in both 2.4TB and 3TB capacities, the drive’s entire storage capacity will be accessible only for computers with relatively new EFI motherboards and 64-bit Windows Vista and Windows 7. The Caviar Black model is also available as 2TB, and Caviar Blue is a 1TB drive that supports the older PATA 100Mbps interface for “unique or legacy” systems.
4Seagate Barracuda Green
5Hitachi Deskstar 7K3000
6Western Digital Scorpio Blue
7Toshiba MKx001TRKB and MKx002TSKB
8Hitachi Deskstar 5K3000
9Western Digital AV-GP
Designed for streaming digital audio/video environments such as PVRs, DVRs and surveillance video recorders, the AV-GP drives are available in 2TB capacities with a SATA 3G-bps interface. The AV-GP is also power efficient, with a combination of IntelliSeek, IntelliPark and IntelliPower technologies.
10Western Digital RE4
The three enterprise drives from Western Digital—RE3, RE4 and RE4-GP—are designed for demanding server and storage applications. The RE3 goes up to 1TB and is tested to perform reliably in vibration-prone environments. The RE4 goes up to 2TB, and the RE4-GP, the green version, is available in 1.5TB or 2TB capacities.
The 2.5-inch PC drive from Toshiba has a spin speed of 5,400 rpm and comes in 750GB or 1TB capacities. The drives can be used as both external and primary storage and features the Advanced Sector Format technology for enhanced data integrity.