W - Definitions

  • W

    wear leveling

    Wear leveling is a process that is designed to extend the life of solid state storage devices. Solid state storage is made up of microchips that store data in blocks.

  • 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)

  • Windows Storage Server 2012

    Microsoft Windows Storage Server 2012 (WSS 2012) is a platform for network-attached storage (NAS ) appliances and iSCSI storage systems.

  • Windows Storage Spaces

    Windows Storage Spaces is a feature in Microsoft Windows Server 2012 that is used to virtualize and provision storage.

  • World Wide Name (WWN)

    A World Wide Name (WWN) is a unique identifier that is assigned to a manufacturer by the Institute of Electrical and Electronic Engineers (IEEE) and hard-coded into a Fibre Channel (FC) device.

  • WORM (write once, read many)

    In computer storage media, WORM (write once, read many) is a data storage technology that allows information to be written to a disc a single time and prevents the drive from erasing the data.

  • 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.

  • write amplification

    Write amplification is an issue that occurs in solid state storage devices that can decrease the lifespan of the device and impact performance.

  • write amplification factor (WAF)

    Write amplification factor (WAF) is a numerical value that represents the amount of data a solid state storage controller has to write in relation to the amount of data that the host’s flash controller has to write.

  • write cycle

    A write cycle is the process of recording data on a NAND flash solid state storage device. Write cycles are also called program/erase (P/E) cycles.

  • 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.  

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