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.

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 Computer System Interface (SCSI) standard.

Aug 6, 2012 · Briefly speaking, you can consider every logical unit (identified by lun) represents a successive logical blocks, numbered from 0. So if SCSI initiator intends to access SCSI target, …

A Logical Unit Number (LUN) is a number used for recognizing a logical unit related to computer storage. A logical unit is a device which can be addressed by computer network protocols like Fibre Channel (FC), Small Computer System Interface (SCSI), Internet SCSI (iSCSI), File Transfer Protocol (FTP) and other such related protocols.

Mar 28, 2023 · The logical unit is a device addressed by the SCSI protocol or Storage Area Network protocols (such as Fibre Channel or iSCSI) that encapsulate iSCSI. LUNs can be used with any device that supports read/write operations, such as tape drives, but is most commonly used to refer to logical disks created on a SAN.

A LUN is a numeric assignment for SCSI or a Fibre Channel, but a LUN is often associated with a SAN using a RAID system. A standard user will not run into LUN assignments, but administrators working with legacy hardware might find LUN management challenging.

Each SCSI device can contain multiple Logical Unit Numbers (LUNs). These are typically used by sophisticated tape and cdrom units that support multiple media. So Linux's flavour of SCSI addressing is a four level hierarchy: SCSI standards allow …

LUN (Logical Unit Number) is a unique identifier within a storage device that recognizes logical units, used in the SCSI protocol to differentiate between various storage units on a single device.

Apr 3, 2023 · Once the storage team has mapped the new LUN’s with the Linux host, new LUN can be discovered by scanning the storage LUN ID at the host end. Scanning can be …

A logical unit is an entity within the SCSI target that responds to SCSI commands. A LUN identifies a specific logical unit in a target. A logical unit can be thought of as a “black box” processor, and the LUN is a way to identify SCSI black boxes. A …