LUN (Logical Unit Number)

A Logical Unit Number (LUN) is a unique identifier used in computer storage systems to distinguish different virtual disks or storage resources. Think of it like an address for a package in a postal system—each LUN represents a specific storage unit, enabling computers to access and manage data efficiently. LUNs are commonly used in storage area networks (SANs) and help facilitate data organization, allocation, and retrieval, ensuring that multiple systems can share a single storage device without confusion. This organization enhances performance and makes managing storage resources more effective.