Using ZFS to mirror two hardware RAID-5 LUNs is actually quite nice. Because the data is mirrored at the ZFS level, you get all the benefits of self-healing. Moreover, you can survive a great variety of hardware failures: three or more disks can die (one in the first array, two or more in the second), failure of a cable, or failure of an entire array.
Jeff On Sat, Jun 14, 2008 at 08:09:49AM -0700, zfsmonk wrote: > Mentioned on > http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide is > the following: > "ZFS works well with storage based protected LUNs (RAID-5 or mirrored LUNs > from intelligent storage arrays). However, ZFS cannot heal corrupted blocks > that are detected by ZFS checksums." > > based upon that, if we have LUNs already in RAID5 being served from > intelligent storage arrays, is it any benefit to create the zpool in a mirror > if zfs can't heal any corrupted blocks? Or would we just be wasting disk > space? > > > This message posted from opensolaris.org > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
