Thanks, we have switched over a couple of our arrays. Have not noticed a performance change so perhaps the effect is minor.
Yes we are using ZFS to do the mirroring between the array LUNs and quite happy with it for reliability. As someone else said, speed and costs are metrics to look at but if the data isn't right nothing else matters. We build 2 5-drive RAID-5 LUNs in each 3510 and then build 2 mirror pairs and pool them. E.g. zpool create mirror Array1Lun1 Array2Lun1 mirror Array1Lun2 Array2Lun2 I suppose you would call this RAID 5+1+0. Our hybrid approach of using the array controllers to build LUNs is a workaround for the ZFS sparing mechanism which is deficient for our needs. We want to be able to specify that a spare drive goes only with the drives in it's own chassis not for the entire pool and that is how we achieve it. Thus we are ensured that no unexpected dependency is introduced into our HA plan when a drive fails. There are 2 global spare drives in each array but the array controllers do the replacement not ZFS. This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
