Called ExtremeFFS, this next-generation patented flash management system, which has the potential to accelerate random write speeds by up to 100 times over existing systems, will ship in SanDisk products during 2009, the company said.
To maximize random write performance, SanDisk said that it developed the ExtremeFFS flash file management system. This operates on a page-based algorithm, which means there is no fixed coupling between physical and logical location. When a sector of data is written, the solid-state drive (SSD) puts it where it is most convenient and efficient. The result is an improvement in random write performance, by up to 100 times, as well as in overall endurance, maintained SanDisk.
According to SanDisk, ExtremeFFS incorporates a fully non-blocking architecture in which all of the NAND channels can behave independently, with some reading while others are writing and garbage collecting. Another key element of ExtremeFFS is usage-based content localization, which reportedly allows the advanced flash management system to learn user patterns and over time localize data to maximize the product’s performance and endurance.
