Thanks kebabber. In my scenario there is no need to seperate OS and data, and the OS itself needs the redundancy. Beside that there is only space for 4 internal discs in that enclosure.
I also tested the current Solaris and that could boot from a raidz2. Therefore I assume that only the installer is missing that option but the kernel is capable of it. Questions remain: Is there a way to install to a raidz2 OR how can I migrate a single disc installation to a raidz2? -- This message posted from opensolaris.org