ZFS is a future proof file system - and also a logical volume manager - which gives us:

Active development of open source ZFS implementation is being done through Open ZFS project.

Getting Started with ZFS

All documentation stored on OpenSolaris project is now gone. OpenZFS documentation can be looked up from:

Documentation section of OpenZFS Project web page.

ZFS chapter from FreeBSD Handbook

ZFS chapter of OpenIndiana Handbook (work in progress)