bad block

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Noun1.bad block - (computer science) a block (usually one sector) that cannot reliably hold databad block - (computer science) a block (usually one sector) that cannot reliably hold data
computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures
block - (computer science) a sector or group of sectors that function as the smallest data unit permitted; "since blocks are often defined as a single sector, the terms `block' and `sector' are sometimes used interchangeably"
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An eMMC IC with host can handle flash management including flash read/write, dual channel data transmission, ECC (error correction coding), wear leveling, and bad block management.
The reason is that the MIXED doesn't execute the BLOCK while no bad block is identified by the FILE.
Optionally, a NAND Flash File system (FFS) is also available to support advanced features such as flash memory read/write, garbage collection, bad block management, wear leveling, and other background functions.
FlashFX(TM) Tera features pre-written support for over 300 flash parts, including MLC, works with virtually any NAND controller, and features wear leveling, bad block management, and background compaction for unrivaled performance.
Improved data integrity via static wear leveling, Reed-Solomon ECC and bad block managenrent.
Usage status and bad block status are easily managed on Flash memory chips by using Smart Command.
The CompactFlash card controller is pre-programmed with an embedded flash file system which, upon initial power-up, recognizes the flash media devices, sets up a bad block table, executes all the necessary handshaking routines for flash media support, and performs the low-level format.
CyberKey also incorporates patent pending Bad Block Memory Management techniques that protect the performance and reliability of its drives.
The controller features numerous performance enhancements, like an effective Error Correction Code, hardware support for Bad Block Management, a scatter-gather DMA, Super Sequence and Command queue.
This design can prevent incomplete data from being recorded and cause a bad block in the NAND flash.
In addition, the system takes advantage of advanced PerfectRAID features, including bad block remapping, and Media Patrol, which scan the system's drive media to ensure that even bad physical drives do not impact data availability.