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Logical unit number, the Glossary

Index Logical unit number

In computer storage, a logical unit number, or LUN, is a number used to identify a logical unit, which is a device addressed by the SCSI protocol or by Storage Area Network protocols that encapsulate SCSI, such as Fibre Channel or iSCSI.[1]

Table of Contents

  1. 21 relations: Cisco Press, Computer data storage, Concatenation, Disk partitioning, Fibre Channel, Host adapter, HP-UX, IBM AIX, ISCSI, Logical disk, Logical Unit Number masking, NCR Voyix, Operating system, Oracle Solaris, Programming language, RAID, SCSI, SCSI CDB, Storage area network, Tape drive, Unix.

Cisco Press

Cisco Press is a publishing alliance between Cisco Systems and Pearson, the world's largest education publishing and technology company which is part of Pearson PLC, the global publisher and co-owner (47%) of Penguin Group and formerly Financial Times.

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Computer data storage

Computer data storage or digital data storage is a technology consisting of computer components and recording media that are used to retain digital data.

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Concatenation

In formal language theory and computer programming, string concatenation is the operation of joining character strings end-to-end.

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Disk partitioning

Disk partitioning or disk slicing is the creation of one or more regions on secondary storage, so that each region can be managed separately.

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Fibre Channel

Fibre Channel (FC) is a high-speed data transfer protocol providing in-order, lossless delivery of raw block data.

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Host adapter

In computer hardware a host controller, host adapter or host bus adapter (HBA) connects a computer system bus which acts as the host system to other network and storage devices. Logical unit number and host adapter are SCSI.

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HP-UX

HP-UX (from "Hewlett Packard Unix") is Hewlett Packard Enterprise's proprietary implementation of the Unix operating system, based on Unix System V (initially System III) and first released in 1984.

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IBM AIX

AIX (Advanced Interactive eXecutive, pronounced) is a series of proprietary Unix operating systems developed and sold by IBM for several of its computer platforms.

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ISCSI

Internet Small Computer Systems Interface or iSCSI is an Internet Protocol-based storage networking standard for linking data storage facilities. Logical unit number and iSCSI are SCSI.

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Logical disk

A logical disk, logical volume or virtual disk (VD or vdisk for short) is a virtual device that provides an area of usable storage capacity on one or more physical disk drive(s) in a computer system.

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Logical Unit Number masking

Logical Unit Number Masking or LUN masking is an authorization process that makes a Logical Unit Number available to some hosts and unavailable to other hosts.

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NCR Voyix

NCR Voyix Corporation, previously known as NCR Corporation and National Cash Register, is an American software, consulting and technology company providing several professional services and electronic products.

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Operating system

An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.

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Oracle Solaris

Solaris is a proprietary Unix operating system originally developed by Sun Microsystems.

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Programming language

A programming language is a system of notation for writing computer programs.

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RAID

RAID ("redundant array of inexpensive disks" or "redundant array of independent disks") is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both.

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SCSI

Small Computer System Interface (SCSI) is a set of standards for physically connecting and transferring data between computers and peripheral devices, best known for its use with storage devices such as hard disk drives.

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SCSI CDB

In SCSI standards for transferring data between computers and peripheral devices, often computer storage, commands are sent in a Command Descriptor Block (CDB). Logical unit number and SCSI CDB are SCSI.

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Storage area network

A storage area network (SAN) or storage network is a computer network which provides access to consolidated, block-level data storage.

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Tape drive

A tape drive is a data storage device that reads and writes data on a magnetic tape.

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Unix

Unix (trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.

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References

[1] https://en.wikipedia.org/wiki/Logical_unit_number

Also known as Logical Unit, SCSI LUN.