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  2. Memory erasure - Wikipedia

    en.wikipedia.org/wiki/Memory_erasure

    Long-term memory has a much larger capacity than the prior two and actually stores information from both these types of memories to create a long lasting and large memory. Long-term memory is the largest target for research involving selective memory erasure. Within long-term memory there are several types of retention. [10]

  3. Data erasure - Wikipedia

    en.wikipedia.org/wiki/Data_erasure

    Unlike degaussing and physical destruction, which render the storage media unusable, data erasure removes all information while leaving the disk operable. New flash memory-based media implementations, such as solid-state drives or USB flash drives, can cause data erasure techniques to fail allowing remnant data to be recoverable. [1]

  4. CPU cache - Wikipedia

    en.wikipedia.org/wiki/CPU_cache

    To understand the problem, consider a CPU with a 1 MiB physically indexed direct-mapped level-2 cache and 4 KiB virtual memory pages. Sequential physical pages map to sequential locations in the cache until after 256 pages the pattern wraps around. We can label each physical page with a color of 0–255 to denote where in the cache it can go.

  5. Wear leveling - Wikipedia

    en.wikipedia.org/wiki/Wear_leveling

    The first type of wear leveling is called dynamic wear leveling and it uses a map to link logical block addresses (LBAs) from the OS to the physical flash memory. Each time the OS writes replacement data, the map is updated so the original physical block is marked as invalid data, and a new block is linked to that map entry. Each time a block ...

  6. Memory - Wikipedia

    en.wikipedia.org/wiki/Memory

    Memory is not a perfect processor and is affected by many factors. The ways by which information is encoded, stored, and retrieved can all be corrupted. Pain, for example, has been identified as a physical condition that impairs memory, and has been noted in animal models as well as chronic pain patients.

  7. Page cache - Wikipedia

    en.wikipedia.org/wiki/Page_cache

    Pages in the page cache modified after being brought in are called dirty pages. [5] Since non-dirty pages in the page cache have identical copies in secondary storage (e.g. hard disk drive or solid-state drive), discarding and reusing their space is much quicker than paging out application memory, and is often preferred over flushing the dirty pages into secondary storage and reusing their space.

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