Budy, if you are using raid-5 or raid-6 underneath ZFS, then you should know that raid-5/6 might corrupt data. See here for lots of technical articles why raid-5 is bad: http://www.baarf.com/ raid-6 is not better. I can show you links about raid-6 being not safe.
I is a good thing you run ZFS, because ZFS can detect those errors, whereas raid-5/6 can not. There are lots of research from computer scientists that show this. You want to see some research papers on data corruption and hardware raid? On the other hand, ZFS is safe. There are research papers showing that ZFS detects and corrects all errors. You want to see them? The bottom line is: ZFS should manage the discs directly. Do not let hardware raid (which can not detect all errors) run the discs. ZFS can detect and repair those errors. That is the reason to use ZFS, for data safety. Not for performance (that is secondary). You do have problems with your discs, only ZFS detects those errors. Your hardware raid did not detect those errors. ZFS can not repair the errors, unless ZFS runs the discs. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
