Damon, Yes, we can provide simple concat inside the array (even though today we provide RAID5 or RAID1 as our standard, and using Veritas with concat), the question is more of if it's worth it to switch the redundancy from the array to the ZFS layer.
The RAID5/1 features of the high-end EMC arrays also provide performance improvements, that's why I wonder what would be the pros/cons of such a switch (I mean the switch of the redundancy from the array to the ZFS layer). So, you telling me that even if the SAN provides redundancy (HW RAID5 or RAID1), people still configure ZFS with either raidz or mirror? Regards, sendai On Sat, Feb 14, 2009 at 6:06 AM, Damon Atkins <damon.atk...@_no_spam_yahoo.com.au> wrote: > Andras, > It you can get Concat Disk or Raid 0 Disk inside the array, then use RaidZ > (if I/O is not large amount or its mostly sequential) if very high I/O then > use ZFS Mirror. You can not spread a zpool over multiple EMC Arrays using > SRDF if you are not using EMC Power Path. > > HDS for example does not support anything other than Mirror or RAID5 > configuration, so RaidZ or ZFS Mirror results in a lot of wasted disk space. > However people still use RaidZ on HDS Raid5. As the top of the line HDS > arrays are very fast and they want the features offered by ZFS. > > Cheers > > -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
