My understanding of "passthrough disk" from the Areca documentation is that single drives are exempted from the RAID controller regime and that the port will behave just like a plain HBA port. Now, on my Areca controller (r.i.p.) that mode always created the biggest havoc with ZFS/Opensolaris, including zpool states just like yours. That was on a older firmware, though. 12xRAID0 was only marginally better than pass-through.
What I maybe did not mention is that we tried with Ubuntu/dmraid on the same HW for an afternoon, but here the initialisation of the RAID crashed with a reproducible Kernel Panic. I think I mentioned it before: the only thing that worked decently was putting the whole controller in JBOD mode. Yes, it is an expensive way of providing a bunch of SATA ports... in my case it wasn't that bad as I got a 1170 for app. 400 Euros, but it was still too expensive given the performance under ZFS, so I swapped it against a full re-fund for a pair of LSIs. Regards, Tonmaus -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
