What is a Hard Disk Drive (HDD)?
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| Hard Disk Drive |
The hard disk drive is the main, and usually largest, data storage hardware device in a computer. The operating system, software and other files are stored in the hard disk drive.
Hard drive is known as "C drive", Microsoft Windows defines primary partition "C" drive letter on primary hard drive in computer by default.
More hard drives. The hard disk drive also goes by the name HDD (hard drive, hard disk, fixed drive, fixed disk, and fixed disk drive).
Inside the hard drive are sectors located on tracks, which are stored on rotating platters. These platters have magnetic heads that move with an actuator arm to read and write data to the drive.
The sides of the hard drive have pre-drilled, threaded holes for easy mounting in the 3.5-inch drive bay in the computer case. Mounting is also possible in a larger 5.25-inch drive bay with an adapter.
The back end of the hard drive contains a port for a cable that connects to the motherboard. The type of cable used (SATA or PATA) depends on the type of drive but is almost always included with a hard drive purchase. Also here is a connection for power from the power supply.
The hard disk drive capacity is a huge factor in determining whether someone will buy a particular device like a laptop or phone. If the storage capacity is rather small, it means it will fill up with files faster, whereas a drive that has lots and lots of storage can handle much more data.
A few of the most popular hard drive manufacturers - Western digital, Seagate, Toshiba, Hitachi and SanDisk.
Hard drive is known as "C drive", Microsoft Windows defines primary partition "C" drive letter on primary hard drive in computer by default.
More hard drives. The hard disk drive also goes by the name HDD (hard drive, hard disk, fixed drive, fixed disk, and fixed disk drive).
How Hard Drive Work?
Unlike volatile storage like RAM, a hard drive keeps a hold of its data even when powered off. This is why you can restart a computer, which powers down the HDD, but still have access to all the data when it's back on.
Inside the hard drive are sectors located on tracks, which are stored on rotating platters. These platters have magnetic heads that move with an actuator arm to read and write data to the drive.
Hard Disk Drive Physical.
The sides of the hard drive have pre-drilled, threaded holes for easy mounting in the 3.5-inch drive bay in the computer case. Mounting is also possible in a larger 5.25-inch drive bay with an adapter.
The back end of the hard drive contains a port for a cable that connects to the motherboard. The type of cable used (SATA or PATA) depends on the type of drive but is almost always included with a hard drive purchase. Also here is a connection for power from the power supply.
Storage Capacity
Popular Hard Disk Drive.
A few of the most popular hard drive manufacturers - Western digital, Seagate, Toshiba, Hitachi and SanDisk.
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