SAN (storage area network) management Definitions

  • A

    ASPI (Advanced SCSI Programming Interface)

    ASPI (Advanced SCSI Programming Interface) specifies how an application program can communicate with a SCSI (Small Computer System Interface) device through a common SCSI device driver.

  • B

    buffer credits or buffer-to-buffer credits (BBCs)

    Buffer credits, also called buffer-to-buffer credits (BBCs), allow data communication in a Fibre Channelstorage area network (SAN) where there are long spans of fiber opticcable.

  • C

    converged network adapter (CNA)

    A converged network adapter (CNA) is a single network interface card (NIC) that contains both a Fibre Channel (FC) host bus adapter (HBA) and a TCP/IP Ethernet NIC.

  • D

    digital film

    Digital film is any storage medium (such as a memory card, diskette, or recordable CD) used in a digital camera to capture and store images.

  • direct access

    In computer storage, direct access is the ability to obtain data from a storage device by going directly to where it is physically located on the device rather than by having to sequentially look for the data at one physical location after another.

  • E

    enterprise storage

    Enterprise storage is a centralized repository for business information that provides common data management and protection, as well as data sharing functions, through connections to numerous (and possibly dissimilar) computer systems.

  • F

    fat provisioning (FP)

    Fat provisioning (FP) is the conventional storage provisioning model, in which space is allocated beyond current needs, in anticipation of growing need and increased data complexity... (Continued)

  • Fibre Channel Arbitrated Loop (FC-AL)

    A Fibre Channel Arbitrated Loop (FC-AL) is a high-speed Fibre Channel (FC) topology that can connect up to 126 ports on one controller using a one-way loop or hub design.

  • H

    hard zoning

    Hard zoning is used to allocate resources and control access in a storage-area network (SAN).

  • I

    InfiniBand

    InfiniBand is an architecture and specification for data flow between processors and I/O devices. The technology is most often used in high-performance computing (HPC) environments... (Continued)

  • IPI (Intelligent Peripheral Interface)

    IPI (Intelligent Peripheral Interface) is a high-bandwidth interface between a computer and a hard disk or a tape device.

  • L

    logical unit number (LUN)

    A logical unit number (LUN) identifies one or more physical or virtual storage devices to a SCSI initiator in a host server to enable data exchange.

  • LUN management

    LUN management is the process of assigning, provisioning and overseeing logical unit numbers (LUNs) across a storage environment.

  • LUN masking

    LUN masking is a further constraint added to zoning, subdividing access to the port so that only LUNs authorized to access a specific server can access the corresponding port.

  • LUN zoning

    LUN zoning is a method of configuring SAN fabric to match logical unit numbers (LUNs) to the proper servers. As a rule, end devices such as hosts can only see and access storage within their zone. Limiting access in this way improves security and allows bandwidth allocation through assigning particular ports to a zone.

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