Definition
LUN is a SCSI protocol term that refers to a logically contiguous piece of storage. This usually corresponds to a volume in a storage array or an individual disk drive on a parallel SCSI bus. The storage volume identifier gets mapped to a LUN by the host operating system and they are usually different.
Key Points
A volume on a storage controller can be assigned different LUN numbers on different hosts. A volume on a storage controller can be partitioned into multiple volumes, and thus, LUNs by storage virtualization software. The storage virtualization software can reside on hosts or network virtualization boxes.
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Voruganti, K. (2016). Logical Unit Number. In: Liu, L., Özsu, M. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4899-7993-3_527-2
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DOI: https://doi.org/10.1007/978-1-4899-7993-3_527-2
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Publisher Name: Springer, New York, NY
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