Sendai, On Fri, Feb 13, 2009 at 03:21:25PM -0800, Andras Spitzer wrote: > Hi, > > When I read the ZFS manual, it usually recommends to configure redundancy at > the ZFS layer, mainly because there are features that will work only with > redundant configuration (like corrupted data correction), also it implies > that the overall robustness will improve. > > My question is simple, what is the recommended configuration on SAN (on > high-end EMC, like the Symmetrix DMX series for example) where usually the > redundancy is configured at the array level, so most likely we would use > simple ZFS layout, without redundancy?
>From my experience, this is a bad idea. I ahve seen couple of cases with such config (no redundancy at ZFS level) where the connection between the HBA and the storage was flaky. And there was no way for ZFS to recover. I agree that MPxIO or any other multipathing handles failure of links. But, that in itself is not sufficient. Thanks and regards, Sanjeev -- ---------------- Sanjeev Bagewadi Solaris RPE Bangalore, India _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
