SM621存儲卡模塊的固態(tài)硬盤（SSD）硬盤驅動器（HDD）規(guī)格書PDF中文資料

Key Features

End to End Data Path Protection

SMI’s FerriSSDs incorporate full data error detection with recovery engines to provide enhanced

data integrity throughout the entire Host-to-NAND-to-Host data path. The FerriSSD? data recovery

algorithm can effectively detect any error in the SSD data path, including hardware (i.e. ASIC) errors,

firmware errors and memory errors arising in SRAM, DRAM or NAND.

NANDXtend? ECC Engine

Conventional SSDs employ standard BCH and RS ECC (error correction coding) engines for initiate

first-level correction using NAND shift-read-retries. In addition to this first-level error correction,

FerriSSDs also implement a highly efficient second-level correction scheme using an LDPC (low-densityparity check) code and a Group page RAID algorithm (a highly efficient redundant backup) to reduce potential dPPM at customer site while extending the service life of SSD.

IntelligentScan and DataRefresh to Enhance Data Integrity

SMI’s proprietary IntelligentScan function will activate automatically to

scan recharge, repair or retire the cell block (DataRefresh) according to the

host behavior and working environment (eg. ambient temperature). As a

result of the combination of IntelligentScan and DataRefresh, FerriSSD?

can effective prolong its service life much beyond typical NAND specifications.