LSI shows off its next-gen SandForce SSD controller

Posted on Friday, Aug 16 2013 @ 14:51 CEST by Thomas De Maesschalck
X-bit Labs reports LSI demonstrated its upcoming SSD controller solutions at the Flash Memory Summit 2013. The company revealed the capabilities of the next-generation SandForce SSD controllers, as well as its improved SandForce SF2000 series, which now supports Toshiba's second-generation advanced 19nm NAND flash memory (A19nm), allowing SSD makers to market more affordable disks. On top of that, LSI also showed its SHIELD technology:
LSI demonstrations include LSI SHIELD technology, an advanced error-correction method designed to deliver enterprise-class SSD endurance and data integrity, even while using less expensive flash memory that typically has higher error rates. SHIELD technology is a unique implementation of low-density parity-check (LDPC) code and digital signal processing (DSP) that will be available in next-generation SandForce flash controllers. The technology combines hard-decision, soft-decision and DSP to provide a comprehensive error correction code (ECC) solution that is optimized for flash memory.

LSI SHIELD technology offers advantages over existing LDPC implementations by uniquely combining several features:

  • Adaptive code rate: dynamically balances performance and reliability over the life of the SSD;
  • Smart handling of transient noise: reduces overall LDPC latency for improved ECC efficiency;
  • Multi-level ECC schema: judiciously applies stronger levels of ECC to minimize latency while maintaining optimal flash performance;

    The demonstration of SHIELD technology at Flash Memory Summit showcased the error-correction advantages of SHIELD technology versus existing LDPC and Bose-Chaudhuri-Hocquenghem (BCH) code methods through a comparison of the three technologies based on various raw bit-error rates (RBER) from the flash.


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    Thomas De Maesschalck

    Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.



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