Use cases

“Almost 15 years …never seen a failure...”

The DDS range of digital data storage solutions from Tape Replacement Ltd deliver a modern, solid state data storage unit designed specifically to replace out-dated magnetic tape, magneto optical, disc hard-drive units such as those used within legacy telephone switching systems. This saves companies such as telcos, and ultimately their customers, millions of dollars in upgrade costs as well as improving overall system reliability and keeping functioning equipment from being dumped in landfills.

The storage layer is made up of two independent stacks of NAND chips, combined using a RAID-1 structure, using YAFFS to expose this to the application.

According to Andre Renaud, Engineering Manager at Tape Replacement:

“We've been running the units for almost 15 years now, and we have never seen a failure of the underlying YAFFS/NAND storage system. YAFFS provides us with a fast, reliable storage mechanism which is especially useful given the changes in NAND technologies over the years, and the intricate technical details of their behaviour.”

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Yaffs in space!

NASA TESS Mission This Transiting Exoplanet Survey Satellite (TESS) will discover thousands of exoplanets in orbit around the brightest stars in the sky.

It is a project regularly using our Yaffs File System to store incoming data and preserve it, in the rigours of the space environment, before sending it back to Earth.

In a two-year survey of the solar neighborhood, TESS will monitor more than 200,000 stars for temporary drops in brightness caused by planetary transits. This first-ever spaceborne all-sky transit survey will identify planets ranging from Earth-sized to gas giants, around a wide range of stellar types and orbital distances. No ground-based survey can achieve this feat.

Some File Systems are not robust enough to be suitable for such exacting work.