OK, I have finally settled on hardware; 2x LSI SAS3081E-R controllers 2x Seagate Momentus 5400.6 rpool disks 15x Hitachi 5K3000 'data' disks
I am still undecided as to how to group the disks. I have read elsewhere that raid-z1 is best suited with either 3 or 5 disks and raid-z2 is better suited with 6 or 10 disks - is there any truth in this, although I think this was in reference to 4K sector disks; 3x 5 drive z1 = 24t usable 2x 6 drive z2 = 16t usable keeping to those recommendations or 2x 7 disk z2 = 20t usable with 1 cold/warm/hot spare as per my original idea. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss