I didn’t until now… and it sounds like HDFS/Hadoop:
Sector/Sphere supports distributed data storage, distribution, and processing over large clusters of commodity computers. Sector is a high performance, scalable, and secure distributed file system. Sphere is a high performance parallel data processing engine that can process Sector data files with very simple programming interfaces. Sector/Sphere can be broadly compared to Google’s GFS/MapReduce stack, but differes several key design choices and provides better performance.
If you know anything about it do share with us!