Hard Disk Drive is a non-volatile storage device which stores digitally encoded data on rapidly rotating platters by magnetizing ferromagnetic material directionally. Hard disk drive also knows as hard disk, hard drive or HDD.

In April 2009, the highest capacity hard disk was launched. Samsung launching 1 TB SpinPoint F1 series desktop drive, Seagate has also entered the mix by launching it’s 1 TB model in the Barracuda. Western Digital also launching Caviar series, Caviar Green with capacity 2 TB and Caviar Black series with capacity 1 TB. Other vendor hard disk that launch big hard disk capacity, Hitachi, launch DeskStar series 7K1000.
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