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Logical Unit Number

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Logical Unit Number

(storage)
(LUN) A 3-bit identifier used on a SCSI bus to distinguish between up to eight devices (logical units) with the same SCSI ID.
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LUN

(Logical Unit Number) An identification scheme for storage disks that typically supports a small number of units addressed as LUN 0 through 7, 15 or 31 depending on the technology. For example, Fibre Channel supports 32 addresses (0-31). A LUN may refer to a single disk, a subset of a single disk or an array of disks. Derived from the SCSI bus technology, each SCSI ID address can be further subdivided into LUNs 0 through 15 for storage arrays and libraries. See SCSI.
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SolarWinds (NYSE: SWI) said it has announced an update to its heterogeneous storage performance and capacity management product, SolarWinds Storage Manager, which extends visibility into array performance and capacity with enhanced EMC monitoring, simplifies charting and reporting, and empowers IT pros to customize their monitoring equipment with user-defined logical unit number grouping.
The new features include an automated sub-LUN (logical unit number) storage tiering and increased VMware and Microsoft integration to improve efficiency and performance.
Features include support for major backup software, compliance with the Storage Networking Industry Association's extended copy specifications and advanced management capabilities, such as support for Logical Unit Number zoning and masking.
With server virtualization deployments, many virtual machines and their corresponding applications share a single I/O connection, such as mounting a network-attached storage (NAS) file system or Fibre Channel logical unit number (FC LUN).
In conjunction with the new drive offerings, the P6000 array also offers logical unit number (LUN)-level tiering, or the ability to seamlessly, but manually, move data from various drive types based on performance requirements.
Once the backbone was in place, New Balance could then install new fiber cabling, implement patch panels for troubleshooting, identify the most efficient use of disk-per-application requirements and determine the best way to provide access to that disk via logical unit number mapping and masking.
SANs divide the storage up into pieces called logical units, or LUNs (Logical Unit Number).
The SANPiper solution also includes advanced management capabilities, including support for logical unit number (LUN) zoning and LUN masking, providing the access control tools required for shared storage environments among multiple heterogeneous hosts.
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