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]

A LUN may be used with any device which supports read/write operations, such as a tape drive, but is most often used to refer to a logical disk as created on a SAN. Though not technically correct, the term "LUN" is often also used to refer to the logical disk itself.[2]

  1. ^ "What is a Logical Unit Number (LUN)?". Techopedia. Retrieved 2016-03-30.
  2. ^ James Long (2006). Storage Networking Protocol Fundamentals. Cisco Press. p. 111. ISBN 9781587051609.