Oracle Solaris ZFS Administration Guide

Triple Parity RAIDZ (raidz3)

Oracle Solaris 10 9/10 Release: In this Solaris release, a redundant RAID-Z configuration can now have either single-, double-, or triple-parity, which means that one, two, three device failures can be sustained respectively, without any data loss. You can specify the raidz3 keyword for a triple-parity RAID-Z configuration. For more information, see Creating a RAID-Z Storage Pool.