null Definitions

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  • V

    virtual LUN (virtual logical unit number)

    A virtual LUN (virtual logical unit number) is a representation of a storage area that is not tied to any physical storage allocation.

  • 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).

  • VRAM (video RAM)

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

  • What is a virtual storage area network (VSAN)? How it works, benefits and use cases

    A virtual storage area network (VSAN) is a logical partition in a physical storage area network, or SAN.

  • What is virtual memory?

    Virtual memory is a memory management technique where secondary memory can be used as if it were a part of the main memory.

  • W

    What is wear leveling?

    Wear leveling is a process that is designed to extend the life of solid-state storage devices.

  • World Wide Name (WWN)

    A World Wide Name (WWN) is a unique identifier that is hard-coded into each Fibre Channel (FC) device by the device's manufacturer.

  • WORM (write once, read many)

    In computer media, write once, read many, or WORM, is a data storage technology that allows data to be written to a storage medium a single time and prevents the data from being erased or modified.

  • write amplification factor (WAF)

    Write amplification factor (WAF) is a numerical value that represents the amount of data a solid-state drive (SSD) controller writes in relation to the amount of data that the host's flash controller writes.

  • write endurance

    Write endurance is the number of program/erase (P/E) cycles that can be applied to a block of flash memory before the storage media becomes unreliable.

  • Y

    yobibyte (YiB)

    A yobibyte (YiB) is a unit of measure used to describe data capacity as part of the binary system of measuring computing and storage capacity.

  • yottabyte (YB)

    A yottabyte (YB) is a measure of theoretical storage capacity and data volumes equal to 2 to the 80th power bytes, or approximately a million trillion megabytes (MB).

  • Z

    What is a zettabyte (ZB)?

    A zettabyte (ZB) is a unit of measurement used by technology professionals and the general public to describe a computer's or other device's storage capacity.

  • What is ZFS?

    ZFS is a local file system and logical volume manager created by Sun Microsystems to direct and control the placement, storage and retrieval of data in enterprise-class computing systems.

  • zebibyte (ZiB)

    A zebibyte (ZiB) is a unit used to measure computing and storage capacity.