> Which is better - > zfs raidz on hardware mirrors, or zfs mirror on hardware raid-5?
The latter. With a mirror of RAID-5 arrays, you get: (1) Self-healing data. (2) Tolerance of whole-array failure. (3) Tolerance of *at least* three disk failures. (4) More IOPs than raidz of hardware mirrors (see Roch's blog entry). (5) More convenient FRUs (the whole array becomes a FRU). Jeff _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss