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.

  • M

    mirror site

    A mirrored site is a website or set of files on a server that has been copied to another server so that the site or files are available from more than one place.

  • MO-297

    MO-297 is a JEDEC standard that defines the layout, connector positions and physical dimensions for a 54mm x 39mm solid state drive (SSD) with a Serial Advanced Technology Attachment (SATA) connector. 

  • MRAM (magnetoresistive random access memory)

    MRAM (magnetoresistive random access memory) is a way to store data bits using magnetic states instead of the electrical charges used by dynamic random access memory (DRAM).

  • MrSID (Multi-resolution Seamless Image Database)

    MrSID (Multi-resolution Seamless Image Database) is an image compressor, viewer, and file format for extremely large raster graphics images.

  • mSATA SSD (mSATA solid-state drive)

    An mSATA SSD is a small-form-factor solid-state drive designed for portable devices such as laptops and tablets. Advantages include low power and vibration resistance.

  • MTTR (mean time to repair)

    MTTR (mean time to repair) is the average time required to fix a failed component or device and return it to production status.

  • multi-level cell (MLC)

    Multi-level cell flash is a type of NAND flash memory that can store more than 1 bit per cell.

  • multipathing (SAN multipathing)

    Multipathing, also called SAN multipathing or I/O multipathing, is the establishment of multiple physical routes between a server and the storage device that supports it. 

  • multiprotocol storage

    Multiprotocol storage, also known as unified or federated storage, supports protocols traditionally associated with SAN block-based and NAS file-based storage in a single device.

  • multisession CD

    A multisession CD is a recordable CD format (like a CD-R) that allows the recording of a compact disk to be conducted in more than one recording session.

  • N

    N_Port ID virtualization (NPIV)

    N_Port ID virtualization (NPIV) is a technology that allows a single host bus adaptor (HBA) called an "N_Port" to register multiple World Wide Port Names (WWPNs) and N_Port identification numbers.

  • NAND flash memory

    NAND flash memory is a type of nonvolatile storage technology that does not require power to retain data.

  • NAND flash wear-out

    NAND flash wear-out is the breakdown of the oxide layer within the floating-gate transistors of NAND flash memory.

  • NAND mirroring

    NAND mirroring has been proposed to break the security in certain portable devices that use NAND flash memory for encryption.

  • nano-storage

    Nano-storage is a nanotechnology approach to storage that seeks to radically increase storage capacities through a variety of technologies, and, ultimately, to replace current storage media with extremely high-density media and devices.

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