Data Backup Definitions

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

  • I

    inline deduplication

    Inline deduplication is the removal of redundancies from data before or as it is being written to a backup device.

  • instant recovery (recovery-in-place)

    Instant recovery involves running a VM instance directly from the secondary storage location without having to first perform a restore of the primary VM.

  • L

    LAN-free backup

    LAN-free backup is the process of backing up server data to a centralized storage device rather than moving it across a local-area network (LAN).

  • Linear Tape-Open (LTO)

    Linear Tape-Open (LTO) is a high-capacity tape storage technology that is open format, giving users access to compatible products from many suppliers.

  • LTFS (Linear Tape File System)

    LTFS (Linear Tape File System) is a file system specification that allows Linear Tape-Open (LTO) storage technology to be indexed.

  • LTO-1 (Linear Tape-Open 1)

    LTO-1 is the first tape format from the Linear Tape-Open Consortium. It has 100 GB native capacity (200 GB compressed) and a native transfer speed of 20 MBps (40 MBps compressed).

  • LTO-10 (Linear Tape-Open 10)

    LTO-10 is an unreleased tape format from the Linear Tape-Open Consortium. It will offer read-and-write backwards compatibility with tapes from the previous generation.

  • LTO-2 (Linear Tape-Open 2)

    LTO-2 is the second tape format from the Linear Tape-Open (LTO) Consortium. It followed the initial LTO-1 version in 2000 and was succeeded by LTO-3 in 2005.

  • LTO-3 (Linear Tape-Open 3)

    LTO-3 is a tape format from the Linear Tape-Open Consortium first released in 2005 that has since been followed by LTO-4, LTO-5 and LTO-6.

  • LTO-4 (Linear Tape-Open 4)

    LTO-4 is a tape format from the Linear Tape-Open Consortium that has been succeeded by LTO-5 and the current LTO-6 version.

  • LTO-5

    LTO-5 is a tape format released in 2010 by the Linear Tape-Open Consortium.

  • LTO-6 (Linear Tape-Open 6)

    LTO-6 is the current tape format from the Linear Tape-Open Consortium first released in 2012 that will eventually be succeeded by LTO-7, LTO-8, LTO-9 and LTO-10.

  • LTO-7 (Linear Tape-Open 7)

    LTO-7 is a tape format from the Linear Tape-Open (LTO) Consortium released in late 2015.

  • LTO-8 (Linear Tape-Open 8)

    LTO-8 is a tape format from the Linear Tape-Open Consortium released in late 2017. It succeeded the LTO-7 version, which launched in 2015.

  • M

    magnetic tape

    Though it's not as big of a primary storage player anymore, tape is often an archiving vehicle. LTO and LTFS tape technologies have improved capacity and access.

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