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Computer Storage

Page history last edited by Dmitry Sokolov 3 years, 8 months ago


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Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. It is a core function and fundamental component of computers.[1]:15-16

The central processing unit (CPU) of a computer is what manipulates data by performing computations. In practice, almost all computers use a storage hierarchy,[1]:468-473 which puts fast but expensive and small storage options close to the CPU and slower but larger and cheaper options farther away. Generally the fast volatile technologies (which lose data when off power) are referred to as "memory", while slower persistent technologies are referred to as "storage"; however, "memory" is sometimes also used when referring to persistent storage.

In the Von Neumann architecture, the CPU consists of two main parts: The control unit and the arithmetic logic unit (ALU). The former controls the flow of data between the CPU and memory, while the latter performs arithmetic and logical operations on data.



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Wikimedia Commons has media related to Computer storage media.



`    ► Computer storage companies (1 C, 126 P)

    ► Computer storage devices (10 C, 78 P)

    ► Computer storage media (5 C, 38 P)

    ► Storage systems (2 C, 5 P)

    ► Computer storage technologies (1 C, 22 P)


`    ► Backup (4 C, 33 P)

    ► Computer storage buses (4 C, 20 P)


`    ► Cloud storage (4 C, 145 P)

    ► Consistency models (20 P)


`    ► Electronic circuits in computer storage (3 P)


`    ► Computer memory (13 C, 189 P)


`    ► Network-attached storage (1 C, 17 P)


`    ► Preloading and prebinding (4 P)


`    ► Storage area networks (1 C, 18 P)

    ► Storage software (10 C, 55 P)


`    ► Storage virtualization (1 C, 11 P)

    ► Volume manager (5 P)

`    ► Computer storage stubs (1 C, 177 P)



`    Computer data storage


`    Bit cell

    Block (data storage)


`    Card image

    Converged storage



`    Dark data

    Data defined storage

    Direct-attached storage

    Disk array

    Disk controller

    Disk space


`    Global Namespace


`    Hierarchical storage management


`    Logical disk

    Logical volume management


`    Memory access pattern

    Memory hierarchy

    Multipath I/O


`    Nearline storage


`    Object storage


`    Single-instance storage

    Stable storage

    Storage efficiency

    Storage Management Initiative – Specification

    Storage record

    Stub file


`    Thin provisioning


`    Storage virtualization

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