If you need to export ZFS volumes through CIFS, follow this simple step by step procedure.
Continue reading OpenSolaris : Exporting a ZFS filesystem with CIFS
In OpenSolaris, switching to the /dev development branch is a bit like switching to the testing branch for some linux distros. So you might want to think twice before doing so, as it might sometimes break things.
If you still want to do that, follow those instructions :
Continue reading OpenSolaris : Switching to the /dev development branch
OpenSolaris 2008.05 is released today, you can grab it from the OpenSolaris website.
The distribution is a bootable CD which will let you try it before installing. It includes most of the big hits of Solaris 10 (zfs, dtrace, containers and so on).
If you never tried Solaris or OpenSolaris, this might be a good kick start !