The FerriSSD® is designed optimally for a wide range of embedded applications requiring faster access speed, small flexible form factor and reliable PCIe NVMe/SATA/PATA storage. By combining industry proven controller technology, NAND flash and passive components into a small single BGA package, FerriSSD® simplifies design efforts, reduces time-to-market while protecting from NAND technology migration concerns.
The SATA/PATA FerriSSD® family consists of the SATA and legacy PATA series featuring high throughput transfer rate with optional embedded DRAM to enhance data storage efficiency and high random read/write IOPS. The 4th generation FerriSSD leveraging Silicon Motion’s most advanced technologies, including IntelligentScan, DataRefresh, high bandwidth LDPC ECC engine with SMI group RAID, and End-to-end data path protection to provide unsurpassed data integrity in a non-volatile storage device. All SATA/PATA FerriSSD® series support 3D SLCmode, MLCmode, and TLCmode NAND flash options.
The PCIe NVMe FerriSSD® family consists of SM689 supporting PCIe Gen3 x4 NVMe 1.3 and SM681supporting PCIe Gen3 x2 NVMe 1.3 designed optimally for high-performance mission critical applications. The SM689 supports embedded DRAM with Data Redundancy with PCIe Gen3 x4 interface – exhibiting sequential read speed of up to 1.45GB/s and sequential write speed of up to 650MB/s. The SM681DRAM-Less series feature the best balance of saving/performance - cost saving from eliminating DRAM while maintaining DRAM-like performance via HMB (Host Memory Buffer). Both available in 3D TLC/MLC/SLC modes, the unique flexible design can support multiple capacity configurations ranging from 5GB to 480GB and include enterprise-grade advanced data integrity and reliability capabilities using Silicon Motion's proprietary end-to-end data protection, ECC and data caching technologies.
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-density parity 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.