Disk buffer & Disk controller - Unionpedia, the concept map

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Difference between Disk buffer and Disk controller

Disk buffer vs. Disk controller

In computer storage, a disk buffer (often ambiguously called a disk cache or a cache buffer) is the embedded memory in a hard disk drive (HDD) or solid-state drive (SSD) acting as a buffer between the rest of the computer and the physical hard disk platter or flash memory that is used for storage. A disk controller is a controller circuit that enables a CPU to communicate with a hard disk, floppy disk or other kind of disk drive.

Disk array controller

A disk array controller is a device that manages the physical disk drives and presents them to the computer as logical units.

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Disk read-and-write head

A disk read-and-write head is the small part of a disk drive which moves above the disk platter and transforms the platter's magnetic field into electric current (reads the disk) or, vice versa, transforms electric current into magnetic field (writes the disk).

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Fibre Channel

Fibre Channel (FC) is a high-speed data transfer protocol providing in-order, lossless delivery of raw block data.

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Flash memory

Flash memory is an electronic non-volatile computer memory storage medium that can be electrically erased and reprogrammed.

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Hard disk drive

A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.

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Parallel ATA

Parallel ATA (PATA), originally, also known as IDE or Integrated Drive Electronics, is a standard interface designed for IBM PC-compatible computers.

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SATA

SATA (Serial AT Attachment) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives.

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SCSI

Small Computer System Interface (SCSI) is a set of standards for physically connecting and transferring data between computers and peripheral devices, best known for its use with storage devices such as hard disk drives.

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