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.

  • I

    iSCSI initiator

    An iSCSI initiator is software or hardware that enables a host computer to transmit data to an iSCSI-based storage array through a network adapter over a TCP-based IP network.

  • iSCSI switch (Internet Small Computer System Interface switch)

    An iSCSI switch is an appliance that processes and channels data between an iSCSI initiator and target on a storage device.

  • J

    Jaz drive

    A Jaz drive is a small, portable hard disk drive used primarily for backing up and archiving personal computer files.

  • JBOD (just a bunch of disks or just a bunch of drives)

    JBOD ("just a bunch of disks") refers to a computer's hard disks that haven't been configured according to the RAID system.

  • JEDEC

    JEDEC is a global industry group that develops open standards for microelectronics.

  • K

    Kibi, mebi, gibi, tebi, pebi, and all that

    Kibi, mebi, gibi, tebi, pebi, and exbi are binary prefix multipliers that, in 1998, were approved as a standard by the International Electrotechnical Commission (IEC) in an effort to eliminate the confusion that sometimes occurs between decimal (power-of-10) and binary (power-of-2) numeration terms.

  • Kilo, mega, giga, tera, peta, exa, zetta and all that

    Kilo, mega, giga, tera, peta, exa, zetta are among the list of prefixes used to denote the quantity of something, such as a byte or bit in computing and telecommunications.

  • kilobyte (KB or Kbyte*)

    As a measure of computer memory or storage, a kilobyte (KB or Kbyte*) is approximately a thousand bytes (actually, 2 to the 10th power, or decimal 1,024 bytes).

  • Kryder's Law

    Kryder's Law describes the rate at which former Seagate CTO Mark Kryder predicted disk drive density would grow.

  • L

    Learning Guide: Firewalls

    How to select the right firewall for your needs

  • legacy storage

    Legacy storage is traditional storage hardware that is older and sometimes no longer sold by its vendor.

  • litigation hold (preservation orders or hold orders)

    Litigation hold is a stipulation requiring a company to preserve all data that may relate to a legal action involving the company... (Continued)

  • Load DynamiX

    Load DynamiX is a storage performance testing appliance that can simulate production workloads and virtual desktop infrastructure workloads to determine how a system handles stress before putting that system into production. Appliances support all major storage protocols.

  • logical unit number (LUN)

    A logical unit number (LUN) is a unique identifier for designating an individual or collection of physical or virtual storage devices that execute input/output (I/O) commands with a host computer, as defined by the Small System Computer Interface (SCSI) standard.

  • LUN management

    LUN management is the process of assigning, provisioning and overseeing logical unit numbers (LUNs) across a storage environment.

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