disk drive - definition. What is disk drive
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%ما هو (من)٪ 1 - تعريف

STORAGE MECHANISMS THAT RECORD DATA ON THE SURFACE OF ROTATING DISKS
Disk drive; Computer disk; Disk Drive; Disc storage; Disc drive; Disk memory; Disc Drive; Disk (storage device); Rotating-disk memory; Data storage disk; Computer disc
  • A CD-ROM (optical) disc drive
  • Comparison of several forms of disk storage showing tracks (not-to-scale); green denotes start and red denotes end.<br /><nowiki>*</nowiki> Some CD-R(W) and DVD-R(W)/DVD+R(W) recorders operate in ZCLV, CAA or CAV modes.
  • Three floppy disk drives
  • Six hard disk drives

disk drive         
(disk drives)
Note: in BRIT, also use 'disc drive'
The disk drive on a computer is the part that contains the disk or into which a disk can be inserted. The disk drive allows you to read information from the disk and store information on the disk.
N-COUNT
disk drive         
<hardware, storage> (Or "hard disk drive", "hard drive", "floppy disk drive", "floppy drive") A peripheral device that reads and writes hard disks or floppy disks. The drive contains a motor to rotate the disk at a constant rate and one or more read/write heads which are positioned over the desired track by a servo mechanism. It also contains the electronics to amplify the signals from the heads to normal digital logic levels and vice versa. In order for a disk drive to start to read or write a given location a read/write head must be positioned radially over the right track and rotationally over the start of the right sector. Radial motion is known as "seeking" and it is this which causes most of the intermittent noise heard during disk activity. There is usually one head for each disk surface and all heads move together. The set of locations which are accessible with the heads in a given radial position are known as a "cylinder". The "seek time" is the time taken to seek to a different cylinder. The disk is constantly rotating (except for some floppy disk drives where the motor is switched off between accesses to reduce wear and power consumption) so positioning the heads over the right sector is simply a matter of waiting until it arrives under the head. With a single set of heads this "rotational latency" will be on average half a revolution but some big drives have multiple sets of heads spaced at equal angles around the disk. If seeking and rotation are independent, access time is seek time + rotational latency. When accessing multiple tracks sequentially, data is sometimes arranged so that by the time the seek from one track to the next has finished, the disk has rotated just enough to begin accessing the next track. See also sector interleave. The disks may be removable disks; floppy disks always are, removable hard disks were common on mainframes and minicomputers but less so on microcomputers until the mid 1990s(?) with products like the Zip Drive. A CD-ROM drive is not usually referred to as a disk drive. Two common interfaces for disk drives (and other devices) are SCSI and IDE. ST-506 used to be common in microcomputers (in the 1980s?). (1997-04-15)
disk drive         
¦ noun a device which allows a computer to read from and write on to computer disks.

ويكيبيديا

Disk storage

Disk storage (also sometimes called drive storage) is a general category of storage mechanisms where data is recorded by various electronic, magnetic, optical, or mechanical changes to a surface layer of one or more rotating disks. A disk drive is a device implementing such a storage mechanism. Notable types are the hard disk drive (HDD) containing a non-removable disk, the floppy disk drive (FDD) and its removable floppy disk, and various optical disc drives (ODD) and associated optical disc media.

(The spelling disk and disc are used interchangeably except where trademarks preclude one usage, e.g. the Compact Disc logo. The choice of a particular form is frequently historical, as in IBM's usage of the disk form beginning in 1956 with the "IBM 350 disk storage unit".)

أمثلة من مجموعة نصية لـ٪ 1
1. Thieves took a laptop computer and an external disk drive.
2. It happened to a computer technician reformatting a disk drive at the Alaska Department of Revenue.
3. Then he put the Windows CD in the disk drive and restarted the machine.
4. It‘s generally just a matter of when, not if, a disk drive fails.
5. But at the rate storage technology is now moving, it is only a matter of time before Healy‘s mock 1–terabyte disk drive becomes a reality.