Storage management tools Definitions

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  • V

    Virtual File Allocation Table (VFAT)

    Virtual File Allocation Table (VFAT) is the part of the Windows 95 and later operating system that handles long file names, which otherwise could not be handled by the original file allocation table file allocation table (FAT) programming.

  • virtual LUN or thin LUN

    A virtual LUN (virtual logical unit number) is a representation of a storage area that is not tied to any physical storage allocation. Virtual LUNs are used in thin provisioning (also known as virtual provisioning) for storage area network (SAN) management. A virtual LUN is also sometimes called a thin LUN.

  • virtual memory

    Virtual memory is a memory management capability of an operating system (OS) that uses hardware and software to allow a computer to compensate for physical memory shortages by temporarily transferring data from random access memory (RAM) to disk storage.

  • virtual provisioning

    Virtual provisioning is a term used by vendors, such as EMC, to describe a process of efficiently provisioning space in storage area networks (SAN). (Continued...)

  • virtual SAN appliance (VSA)

    A virtual SAN appliance (VSA) is a software bundle that allows a storage manager to turn the unused storage capacity in his network's virtual servers into a storage area network (SAN).

  • virtual storage area network (VSAN)

    A virtual storage area network (VSAN) is a logical partition in a storage area network (SAN). VSANs allow traffic to be isolated within specific portions of a storage area network.

  • Virtual Storage Portal (VSP)

    Another meaning for VSP is vertical solutions provider.

  • VRAM (video RAM)

    VRAM (video RAM) is a reference to any type of random access memory (RAM) used to store image data for a computer display.

  • W

    White Book

    The White Book, which was released in 1993 by Sony, Philips, Matsushita, and JVC, is the specification document for Video CD (VCD).

  • wide-area file services (WAFS)

    Wide-area file services (WAFS) is a storage technology that makes it possible to access a remote data center as though it were local. Among other benefits, WAFS enables businesses, academic institutions, and government agencies having numerous branch offices to centrally manage data backups in real time... (Continued)

  • WRAM (Window RAM)

    Window RAM (WRAM), unrelated to Microsoft Windows, is very high-performance video RAM that is dual-ported and has about 25% more bandwidth than VRAM but costs less.

  • X

    XAM (eXtensible Access Method)

    XAM (eXtensible Access Method) is a standard that makes it easier to manage fixed content by freeing data from dependencies on location, applications and storage devices.

  • Z

    zoned-bit recording (ZBR)

    Zoned-bit recording (ZBR) is a method of physically optimizing the utilization of a hard drive by placing more sectors in the outer tracks than in the inner tracks.

  • zoning

    In a storage area network (SAN), zoning is the allocation of resources for device load balancing and for selectively allowing access to data only to certain users.

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