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  2. Wear leveling - Wikipedia

    en.wikipedia.org/wiki/Wear_leveling

    The other type of wear leveling is called static wear leveling which also uses a map to link the LBA to physical memory addresses. Static wear leveling works the same as dynamic wear leveling except the static blocks that do not change are periodically moved so that these low usage cells are able to be used by other data.

  3. Write amplification - Wikipedia

    en.wikipedia.org/wiki/Write_amplification

    Write amplification goes down and SSD speed goes up when data compression and deduplication eliminates more redundant data. Variable Inverse (good) Using MLC NAND in SLC mode This writes data at a rate of one bit per cell instead of the designed number of bits per cell (normally two bits per cell or three bits per cell) to speed up reads and ...

  4. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  5. Solid-state drive - Wikipedia

    en.wikipedia.org/wiki/Solid-state_drive

    An SSD stores data in semiconductor cells, with its properties varying according to the number of bits stored in each cell (between 1 and 4). Single-level cells (SLC) store one bit of data per cell and provide higher performance and endurance.

  6. Solid-state storage - Wikipedia

    en.wikipedia.org/wiki/Solid-state_storage

    Drum memory – a magnetic data storage device used as the main working memory in many early computers; i-RAM – a DRAM-based solid-state storage device produced by Gigabyte, operating as a SATA hard disk drive; Magnetic storage – the concept of storing data on a magnetised medium using different patterns of magnetisation

  7. Trim (computing) - Wikipedia

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

    Non-deterministic TRIM: Each read command to the logical block address (LBA) after a TRIM may return different data. Deterministic TRIM (DRAT): All read commands to the LBA after a TRIM shall return the same data, or become determinate. Deterministic Read Zero after TRIM (RZAT): All read commands to the LBA after a TRIM shall return zero.

  8. XOR swap algorithm - Wikipedia

    en.wikipedia.org/wiki/XOR_swap_algorithm

    Using the XOR swap algorithm to exchange nibbles between variables without the use of temporary storage. In computer programming, the exclusive or swap (sometimes shortened to XOR swap) is an algorithm that uses the exclusive or bitwise operation to swap the values of two variables without using the temporary variable which is normally required.

  9. zswap - Wikipedia

    en.wikipedia.org/wiki/Zswap

    One of the alternatives to zswap is zram, which provides a similar but still different "swap compressed pages to RAM" mechanism to the Linux kernel.. The main difference is that zram provides a compressed block device using RAM for storing data, which acts as a regular and separate swap device.