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  2. Disk buffer - Wikipedia

    en.wikipedia.org/wiki/Disk_buffer

    The disk buffer is usually quite small, ranging between 8 MB to 4 GB, and the page cache is generally all unused main memory. While data in the page cache is reused multiple times, the data in the disk buffer is rarely reused. [3] In this sense, the terms disk cache and cache buffer are misnomers; the embedded controller's memory is more ...

  3. Inforex 1300 Systems - Wikipedia

    en.wikipedia.org/wiki/Inforex_1300_Systems

    Inforex Inc. corporation manufactured and sold key-to-disk data entry systems in the 1970s and mid-1980s. The company was founded by ex-IBM engineers to develop direct data entry systems that allowed information to be entered on terminals and stored directly on disk drives, replacing keypunch machines using punched cards or paper tape, which had been the dominant tools for data entry since the ...

  4. Disk cache - Wikipedia

    en.wikipedia.org/wiki/Disk_cache

    Disk cache may refer to: . Disk buffer, the small amount of RAM embedded on a hard disk drive, used to store the data going to and coming from the disk platters; Page cache, the cache of data residing on a storage device, kept by the operating systems and stored in unused main memory

  5. Data buffer - Wikipedia

    en.wikipedia.org/wiki/Data_buffer

    In computer science, a data buffer (or just buffer) is a region of memory used to store data temporarily while it is being moved from one place to another. Typically, the data is stored in a buffer as it is retrieved from an input device (such as a microphone) or just before it is sent to an output device (such as speakers); however, a buffer may be used when data is moved between processes ...

  6. Walmart Rolls Out Major Changes For Customers. What to Know

    www.aol.com/finance/walmart-rolls-major-changes...

    TIME has reached out to Walmart for comment and further information. The news comes after Walmart made a similar change to three New Mexico stores last year, removing all self-checkout machines.

  7. Walmart has a Canon all-in-one printer for $29, and I ... - AOL

    www.aol.com/lifestyle/walmart-canon-one-printer...

    Enter the Canon Pixma MG2522 all-in-one, currently on sale at Walmart for just $29. You'd be hard-pressed to buy a single ink cartridge for $29, let alone an entire printer.

  8. Write-ahead logging - Wikipedia

    en.wikipedia.org/wiki/Write-ahead_logging

    A write ahead log is an append-only auxiliary disk-resident structure used for crash and transaction recovery. The changes are first recorded in the log, which must be written to stable storage, before the changes are written to the database. [2] The main functionality of a write-ahead log can be summarized as: [3]

  9. Hard disk drive performance characteristics - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive...

    Floppy disk drives have sustained "disk-to-buffer" data transfer rates that are one or two orders of magnitude lower than that of HDDs. The sustained "disk-to- buffer " data transfer rates varies amongst families of Optical disk drives with the slowest 1x CDs at 1.23 Mbit/s floppy-like while a high performance 12x Blu-ray drive at 432 Mbit/s ...

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