It is designed for performance, scalability and integrity, offering improvements over standard Amiga filesystems as well as some special or unique features.
[3] The log is written to disk first into free space and then meta data blocks are overwritten directly.
Should the system crash, the next time the filesystem is mounted it will notice the uncompleted operation and roll it back to the last known consistent state.
[3] The defragmentation process is almost completely stateless (apart from the location it is working on), which means it can be stopped and started instantly.
After the original author left the Amiga scene in 2000, the source code to SFS was released and its development continued by Ralph Schmidt in MorphOS.