The disk controller (or "hard disk controller") is the circuit which allows the CPU to communicate with a hard disk, floppy disk or other kind of disk drive. An electrical network or electrical circuit is an interconnection of electrical elements such as resistors, inductors, capacitors, diodes, switches and transistors. ... Intel 80486DX2 microprocessor in a ceramic PGA package A central processing unit (CPU), or sometimes simply processor, is the component in a digital computer that interprets instructions and processes data contained in software. ... Typical hard drives of the mid-1990s. ... A floppy disk is a data storage device that is composed of a ring of thin, flexible (i. ... Disk Drive is the afternoon show on CBC Radio Two. ...
The most common disk controllers in use are IDE and SCSI controllers. Most home personal computers use IDE controllers. High end PCs, workstations and network file servers mostly have SCSI adaptors. ATA cables: 40 wire ribbon cable top, 80 wire ribbon cable bottom Advanced Technology Attachment (ATA) is a standard interface for connecting storage devices such as hard disks and CD-ROM drives inside personal computers. ... SCSI stands for Small Computer System Interface, and is a standard interface and command set for transferring data between devices on both internal and external computer buses. ... A computer workstation, often colloquially referred to as workstation, is a high-end general-purpose microcomputer designed to be used by one person at a time and which offers higher performance than normally found in a personal computer, especially with respect to graphics, processing power and the ability to carry... In telecommunication, the term file server has the following meanings: A high-capacity disk storage device or a computer that hosts files so that they may be accessed or retrieved by other computers on the same network. ...
This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.
In computing, a disk array controller is a computer hardware device which provides secondary storage services to computer systems, often in large servers.
It is the critical component of a disk array.
A disk array controller usually attaches to a number of disk drives in disk enclosures which are organised into RAID sets or groups for data protection and performance reasons.
The diskcontroller does not know that it is now talking to a new disk drive, and the head position of the new disk drive may be different from the old one.
As soon as the controller tries to execute any read or write command, it will notice that the data coming from the disk drive is claiming track 23, instead of the 10 it expected.
Signals are named from the perspective of the 1793 diskcontroller chip, so "input" means input to that chip from either the computer or the disk drive, and "output" means an output from the 1793 to one of those.
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