The DAFT disk filing system

The Windows® NTFS disk filing system was first introduced in 1993, but despite its undoubted sophistication, not everyone is convinced that it is perfectly tuned for all possible eventualities. Prompting Dr. Fanglu Guo and Dr. Tzi-cker Chiueh from Symantec Research. Laboratories, Culver City, USA to develop their DAFT disk operating system. A comprehensive description of DAFT [Disk geometry-Aware File system Traversal] (a novel algorithmic suite designed to improve the read efficiency of bulk file accesses) is published in the eccentrically titled  ‘Modeling, Analysis & Simulation of Computer and Telecommunication Systems, 2009. MASCOTS ’09. IEEE International Symposium on’.
But is DAFT better than NTFS? “It can reduce the elapsed time of enumerating all files in a file system by a factor of 5 to 15 for both fragmented and non-fragmented file systems on fast and slow disks.” say the developers.

Those interested in the fine-grained details of DAFT’s data-driven filing techniques can access the paper in full here:






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