ZFS may be Yet Another File System. To me, ZFS is Ze File System brought by Sun Solaris. It is remarkable because it comes with numerous interesting features. To name a few: redundancy, checksum, compression, deduplication, snapshots.
This article is a kind of cheat sheet on what is ZFS, how it is organized and how to build a consistent storage area using this particular file system. It is mostly an attempt to clarify and write down what I read about ZFS and how it has to be used to achieve various storage goals.