Flash Memory - Flash File Systems

Flash File Systems

This section does not cite any references or sources.

Because of the particular characteristics of flash memory, it is best used with either a controller to perform wear leveling and error correction or specifically designed flash file systems, which spread writes over the media and deal with the long erase times of NOR flash blocks. The basic concept behind flash file systems is the following: when the flash store is to be updated, the file system will write a new copy of the changed data to a fresh block, remap the file pointers, then erase the old block later when it has time.

In practice, flash file systems are only used for memory technology devices (MTDs), which are embedded flash memories that do not have a controller. Removable flash memory cards and USB flash drives have built-in controllers to perform wear leveling and error correction so use of a specific flash file system does not add any benefit.

Read more about this topic:  Flash Memory

Other articles related to "flash file system, file system, files, flash, flash file systems, systems":

Flash File System
... A flash file system is a file system designed for storing files on flash memory devices ... mobile devices is increasing, the cost per memory size decreases, and the capacity of flash memories increases ... layer can emulate a disk drive so that a disk file system can be used on a flash device, this is suboptimal for several reasons Erasing blocks Flash memory blocks have to be ...
Types of File Systems - Flash File Systems
... A flash file system considers the special abilities, performance and restrictions of flash memory devices ... Frequently a disk file system can use a flash memory device as the underlying storage media but it is much better to use a file system specifically designed for a flash device ...
Flash File Systems - Translation Layers - ExtremeFFS
... technology being developed by SanDisk allowing for improved random write performance in flash memory compared to traditional systems such as TrueFFS ... on using ExtremeFFS in an upcoming Multi-level cell implementation of NAND flash memory ...

Famous quotes containing the words systems, flash and/or file:

    The geometry of landscape and situation seems to create its own systems of time, the sense of a dynamic element which is cinematising the events of the canvas, translating a posture or ceremony into dynamic terms. The greatest movie of the 20th century is the Mona Lisa, just as the greatest novel is Gray’s Anatomy.
    —J.G. (James Graham)

    Tom: All right, boys. C’mon. Why don’t you say I’m a yellow belly and a big mouth at that?
    Shep: You yellow? Who thinks you’re yellow? Did you hear what he said? A guy who’s got the nerve to marry? That’s more than Flash Gordon ever did.
    Billy Wilder (b. 1906)

    I have been a soreheaded occupant of a file drawer labeled “Science Fiction” ... and I would like out, particularly since so many serious critics regularly mistake the drawer for a urinal.
    Kurt Vonnegut, Jr. (b. 1922)