Hard Disk Drive

Computer Components

What Is A Hard Disk Drive?

A hard disk drive is a type of storage device made up of hard disk platters, a spindle, read and write heads, read and write arms, electrical motors, and integrated electronics contained inside an airtight enclosure.

Is It A Floppy Disk?

Using rigid platters and sealing the unit allows much tighter tolerances that in a floppy disk. So hard disks can store much more data than floppy disk, and access and transmit it faster. In 2003, a typical workstation hard disk might store between 60 GB and 120 GB of data, rotate at 5400 to 10,000 rpm (revolutions per minute), and have an average transfer rate of about 30 MByte per sec.

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