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  2. Core Storage - Wikipedia

    en.wikipedia.org/wiki/Core_Storage

    Core Storage is a logical volume management system on macOS that was introduced by Apple to Mac OS X Lion. Core Storage is a layer between the disk partition and the file system. [1] Core Storage is the basis for Apple's Fusion Drive technology, [2] which presents several partitions on multiple drives as a single logical volume.

  3. In-memory processing - Wikipedia

    en.wikipedia.org/wiki/In-memory_processing

    In software engineering, in-memory processing is a software architecture where a database is kept entirely in random-access memory (RAM) or flash memory so that usual accesses, in particular read or query operations, do not require access to disk storage. [2]

  4. Computer data storage - Wikipedia

    en.wikipedia.org/wiki/Computer_data_storage

    In contemporary usage, memory is usually fast but temporary semiconductor read-write memory, typically DRAM (dynamic RAM) or other such devices. Storage consists of storage devices and their media not directly accessible by the CPU (secondary or tertiary storage), typically hard disk drives, optical disc drives, and other devices slower than ...

  5. In-memory database - Wikipedia

    en.wikipedia.org/wiki/In-memory_database

    An in-memory database (IMDb, or main memory database system (MMDB) or memory resident database) is a database management system that primarily relies on main memory for computer data storage. It is contrasted with database management systems that employ a disk storage mechanism. In-memory databases are faster than disk-optimized databases ...

  6. Fusion Drive - Wikipedia

    en.wikipedia.org/wiki/Fusion_Drive

    Fusion Drive remains available in subsequent models of these computers, but was not expanded to other Apple devices: the latest MacBook and Mac Pro models use exclusively flash storage, and while this was an optional upgrade for the mid-2012 non-Retina MacBook Pro discontinued by Apple, it replaced the standard hard disk drive in October 2021 ...

  7. Volume (computing) - Wikipedia

    en.wikipedia.org/wiki/Volume_(computing)

    In computer data storage, a volume or logical drive is a single accessible storage area with a single file system, typically (though not necessarily) resident on a single partition of a hard disk. Although a volume might be different from a physical disk drive, it can still be accessed with an operating system's logical interface.

  8. Memory hierarchy - Wikipedia

    en.wikipedia.org/wiki/Memory_hierarchy

    Main memory (Primary storage) – GiB [citation needed] [original research] in size. Best access speed is around 10 GB/s. [9] In the case of a NUMA machine, access times may not be uniform; Disk storage (Secondary storage) – Terabytes in size. As of 2017, best access speed is from a consumer solid state drive is about 2000 MB/s [10]

  9. File system - Wikipedia

    en.wikipedia.org/wiki/File_system

    The physical file system layer provides relatively low-level access to a storage device (e.g. disk). It reads and writes data blocks, provides buffering and other memory management and controls placement of blocks in specific locations on the storage medium. This layer uses device drivers or channel I/O to drive the storage device. [7]