ZFS added RAIDZ3 (triple parity) was because the likelihood of hitting another error before a resilver finishes is likely with > 3TB and current ECC on drives today.
If you're using 4 TB drives, you should be using double parity (RAID6 or 3 way mirrors). On Sat, Apr 27, 2013 at 7:50 PM, Michael ODonnell < michael.odonn...@comcast.net> wrote: > > > Even on just a silly little RAID1 mirror on a multi-Tb > array I dread seeing the various messages announcing > "routine" maintenance and diagnostic operations as > they take forever and don't come for free, resource-wise... > > _______________________________________________ > gnhlug-discuss mailing list > gnhlug-discuss@mail.gnhlug.org > http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/ >
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