disk

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disk

1. The two-dimensional projection of the surface of a star or planet.
2. See Galaxy; galaxies.

Disk

A flat, circular, raised ornament, carved as a series of disks adjacent to each other.

disk

[disk]
Also spelled disc.
(astronomy)
A relatively thin layer of material distributed in the central plane of a spiral galaxy, in contrast to the nucleus or halo.
(biology)
Any of various rounded and flattened animal and plant structures.
(computer science)
A rotating circular plate having a magnetizable surface on which information may be stored as a pattern of polarized spots on concentric recording tracks. Also known as magnetic disk.
(engineering acoustics)
(mathematics)
The region in the plane consisting of all points with norm less than 1 (sometimes less than or equal to 1).

disk

(storage)
1. magnetic disk.

2. compact disc.

3. optical disk.

Note: the american spelling, "disk", is normal for most computer disks whereas "compact disc", having come to computers via the audio world, is correctly spelled with a "c", indeed, this spelling is part of the CD standard.

disk

A direct access storage device. See floppy disk, hard disk, magnetic disk, optical disc, CD-ROM and DVD.


Disk and Memory Work Together
On the disk, data are stored in sectors, which hold a chunk of data (typically 512 bytes) and are the smallest unit that can be read or written. Memory is broken up into squares like a checkerboard, each square holding one byte. The contents of any single byte or group of bytes can be calculated, compared and copied independently. That is how fields are put together to form records and broken apart when read back in.
References in periodicals archive ?
The bearing and the read-write head move at acceleration rates up to 50 gs on a slender air cushion (only 50 nanometers thick) above the storage disk surface.
The utility encrypts an existing data storage disk, block-by-block.
The test data moved over Gigabit Ethernet to a Fibre Channel SAN containing a Hitachi Freedom Storage disk subsystem.
By combining different storage disk types and interface technologies into a single, unified system, Compellent cuts the law firm's costs of managing its information in half.
A hybrid technology, MO makes it possible to read and write vast amounts of digital information by using a laser light source and a magnetic field to change the direction of magnetization, and therefore the contents of the storage disk.
With more than one workstation competing for the same 100MB/sec channel, performance bottlenecks can occur due to storage disk head motion and channel contention.
com to delay disk purchases and leverage storage disk drive price erosion to get more capacity at a lower cost.
The main purpose and object of the framework agreement is concluded securing of supply of hardware and software and related services by the successful tenderer, the contracting authority where the primary objective is to create a fully functioning HW and SW infrastructure including in particular data storage disk arrays, basic software licenses and maintenance, field maintenance and NAS, SAN components and maintenance, backup system, additional technical features and maintenance, related Assistance (SLA) for customers needs National Data Center.
data storage solution: the service wishes to replace the current data storage solution as served by two hp eva8100 san attached, shared storage disk arrays.
FlashDisk OpenSAN supports 150, 300, 400 and 500 GB enterprise class disk drives and 750 GB secondary storage disk drives for the highest capacity.
HP today unveiled an enterprise-class storage disk array that provides customers with lower total cost of ownership (TCO) for traditional storage workloads in mission-critical environments.
Leveraging Its Global Presence and Expertise, NEC's Feature-Rich Storage Disk Arrays Deliver High Performance and Increased Availability to the Small-to-Medium Business Market