With that in mind, here's some interesting links for those who care about such things as well:
- BTRFS - a copy on write filesystem for Linux focusing on fault tolerance, repair and easy administration.
- HAMMER - a highly available clustered filesystem being developed for DragonFlyBSD
- LFS - a log structured file system for Linux that supports snapshots.
- POHMELFS - the Parallel Optimized Host Message Exchange Layered File System.
And last but not least, a link to the list of file systems currently available in the Linux kernel.