Storage Technology Definitions

This glossary explains the meaning of key words and phrases that information technology (IT) and business professionals use when discussing storage and related software products. You can find additional definitions by visiting WhatIs.com or using the search box below.

  • L

    LUN masking

    LUN masking is a further constraint added to zoning, subdividing access to the port so that only LUNs authorized to access a specific server can access the corresponding port.

  • LUN zoning

    LUN zoning is a method of configuring SAN fabric to match logical unit numbers (LUNs) to the proper servers. As a rule, end devices such as hosts can only see and access storage within their zone. Limiting access in this way improves security and allows bandwidth allocation through assigning particular ports to a zone.

  • M

    M.2 SSD

    An M.2 SSD is a solid-state drive (SSD) that conforms to a computer industry specification written for internally mounted storage expansion cards of a small form factor.

  • magneto-optical drive (MO)

    The magneto-optical (MO) drive is a popular way to back up files on a personal computer.

  • magnetoresistive head technology

    Magnetoresistive (MR) head technology is used in disk drives to allow higher storage densities than the older inductive-head technology.

  • MAID (massive array of idle disks)

    MAID (massive array of idle disks) is a storage technology in which only those disk drives in active use are spinning at any given time...

  • Mammoth

    Mammoth is a magnetic tape and drive system used for computer data storage and archiving.

  • managed storage

    Managed storage is the process of offloading an organization’s data storage requirements to an outside managed service provider.

  • mebibyte (MiB)

    A mebibyte (MiB) is a unit of measurement used in computer data storage.

  • megabyte (MB)

    As a measure of computer processor storage and real and virtual memory, a megabyte (abbreviated MB) is 2 to the 20th power bytes, or 1,048,576 bytes in decimal notation.

  • megabytes per second (MBps)

    Megabytes per second (MBps) describes a unit of data transfer to and from a computer storage device.

  • memory

    Memory is the electronic holding place for instructions and data that your computer's microprocessor can reach quickly.

  • Memory Stick

    Developed by Sony, the Memory Stick is a digital data storage technology with up to 10 times the storage capacity of a 3.5 diskette.

  • Microsoft Volume Shadow Copy Service (Microsoft VSS)

    Microsoft VSS is a Windows Server feature used for backing up and restoring LUNs and individual files.

  • Millipede

    Millipede is a nano-storage prototype developed by IBM that can store data at a density of a trillion bits per square inch: 20 times more than any currently available magnetic storage medium.

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