Innodisk SATA Slim 3MG2-P Series, Руководство пользователя

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SATA Slim 3MG2-P
16 Rev 1.9 TPS, Oct.,2017
3.3 Error Detection and Correction
Highly sophisticated Error Correction Code algorithms are implemented. The ECC unit consists of
the Parity Unit (parity-byte generation) and the Syndrome Unit (syndrome-byte computation).
This unit implements an algorithm that can correct 66 bits per 1024 bytes in an ECC block.
Code-byte generation during write operations, as well as error detection during read operation, is
implemented on the fly without any speed penalties.
3.4 Wear-Leveling
Flash memory can be erased within a limited number of times. This number is called the erase
cycle limit or write endurance limit and is defined by the flash array vendor. The erase cycle
limit applies to each individual erase block in the flash device.
Innodisk SATA Slim 3MG2-P uses a static wear-leveling algorithm to ensure that consecutive
writes of a specific sector are not written physically to the same page/block in the flash. This
spreads flash media usage evenly across all pages, thereby extending flash lifetime.
3.5 Bad Blocks Management
Bad Blocks are blocks that contain one or more invalid bits whose reliability are not guaranteed.
The Bad Blocks may be presented while the SSD is shipped, or may develop during the life time of
the SSD. When the Bad Blocks is detected, it will be flagged, and not be used anymore. The SSD
implement Bad Blocks management, Bad Blocks replacement, Error Correct Code to avoid data
error occurred. The functions will be enabled automatically to transfer data from Bad Blocks to
spare blocks, and correct error bit.
3.6 iData Guard
Innodisk’s iData Guard is a comprehensive data protection mechanism that functions before and
after a sudden power outage to SSD. Low-power detection terminates data writing before an
abnormal power-off, while table-remapping after power-on deletes corrupt data and maintains
data integrity. Innodisk’s iData Guard provides effective power cycling management, preventing
data stored in flash from degrading with use.
3.7 Garbage Collection/TRIM
Garbage collection and TRIM technology is used to maintain data consistency and perform
continual data cleansing on SSDs. It runs as a background process, freeing up valuable controller
resources while sorting good data into available blocks, and deleting bad blocks. It also
significantly reduces write operations to the drive, thereby increasing the SSD’s speed and
lifespan.