![]() That's not even with wear leveling considerations This will be a lot more important as NAND geometries shift to lower and lower Write PE as circuitry shrinks for higher density.Ī drive under heavy worst case loads with Sandforce at 3x WA has NAND lifespan of up to 6x+ that of non SF based that don't manage in this way. The higher the write amp, the shorter the flash life. Non SF processors are typically 2 to 20x write amp today. Also, it adjusts algorithmic response as drive use occurs and usage is profiled.Ĭompression is something of huge consideration the Sandforce processor today 2xxx series is worst case 3x write amplification with incompressible data and best case less than 0.3 with compressible. It’s not ongoing and completes quickly - but will occur outside data activity depending on load. Sandforce processor will do wear leveling and garbage cleanup as an ongoing process in between active periods and during activity in real time if resources allow. This is a two-edged sword: the write performance is consistent for all types of data, but the lifetime of the flash memory might be lessened due to increased write activity. Not all SSDs compress data, which is not to say this makes other types inherently faster. ![]() The Sandforce processor uses lossless compression to minimize the write cycles to the flash memory and to speed up write performance (as of May 2012 this was true for all SSDs based on Sandforce). Many types and brands of solid state drives (SSDs) utilize the Sandforce processor chip to implement the SSD, such as the OWC Mercury Accelsior and the OWC Mercury Extreme Pro SSDs. Incompressible data - data that does not shrink when lossless compression is applied, or even grows in size. Send Feedback Related: data compression, Photoshop, SSD, storageĬompressible data - data that shrinks when lossless compression is applied.
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