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.

  • L

    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 (Linear Tape-Open 5)

    First released in 2010, LTO-5 is a tape format from the Linear Tape-Open Consortium. Though LTO-6 is available, LTO-5 remains popular among tape users.

  • 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 planned, but not yet released tape format from the Linear Tape-Open (LTO) Consortium. It will succeed the LTO-7 version.

  • 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.

  • Mozy (by Dell)

    Mozy (by Dell) is a cloud backup service owned by Dell EMC that targets customers ranging from consumers through to the enterprise.

  • N

    near-continuous data protection (near CDP)

    Near-continuous data protection, sometimes called near-continuous protection, is a general term for backup and recovery products that take snapshots at set intervals. The term evolved from a need to differentiate products that take snapshots on a pre-determined schedule (every fifteen minutes, for example) from those products that take snapshots each time new data is written (true CDP).

  • O

    online data backup (remote data backup)

    Online data backup (remote data backup) is a method of off-site storage in which data is regularly backed up over a network on a remote server, typically hosted by a provider.

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