Data Backup Definitions

  • #

    8-track tape

    An 8-track tape is a hard plastic cartridge about the size of an external modem that houses a continuous loop of non-digital (analog) audio data stored on magnetic tape.

  • B

    backup robot

    A backup robot is an automated external USB storage device that supports multiple removable SATA hard drives. The device offers small businesses and consumers many of the benefits of smart storage without the cost or complexity of RAID systems.

  • D

    delta differencing

    Delta differencing is an incremental approach to backup that only backs up blocks that have changed after the first full backup. The differences are recorded in files called deltas.

  • F

    failover

    Failover is a backup operational mode in which the functions of a system component (such as a processor, server, network, or database, for example) are assumed by secondary system components when the primary component becomes unavailable through either failure or scheduled down time.

  • H

    host-based replication

    Host-based replication is the processes of using servers to copy data from one site to another.

  • M

    MozyEnterprise

    MozyEnterprise is EMC's subscription-based online data backup service for business. (Continued...)

  • S

    shadow RAM

    Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a special area of random access memory (RAM) so that they can be accessed more quickly.

  • single-electron memory (SEM)

    Single-electron memory (SEM) refers to experimental hardware technologies in which the position or presence of a single charge carrier, usually an electron, makes the difference between the logical low (0) and high (1) states in a digital system.

  • storage filer

    A storage filer is a file server designed and programmed for high-volume data storage, backup, and archiving.

  • T

    tape drive

    A tape drive is a device that stores computer data on magnetic tape, especially for backup and archiving purposes.

  • V

    virtual tape

    Virtual tape is an archival storage technology that makes it possible to save data as if it were being stored on tape although it may actually be stored on hard disk or on another storage medium.

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