ZFS scrub on new disks gives cksum errors

[Brian N]

On Mon, Dec 08, 2014 at 09:09:51AM -0800, Sean Chittenden wrote:
> I had this exact problem at home on my FreeNAS host when a box is plugged
> in to residential power that is "not clean."  If you plug this host in to a
> UPS it should clear things up instantly (find a sine wave UPS, not a
> digital stepping supply).  There's something about the fluctuating power or
> brownouts that ZFS is well suited to detecting (and became terrifying to me
> because wtf happened in the past pre-ZFS??).
> 
> -sc

Interesting.  I have a UPS (APC Back-UPS ES 550 (stepped)) on the same circuit
(residential power) that routinely gives me power outage messages where an
outage lasts 1-2 seconds.  Other electrical devices (lights, etc) are not
affected and I just thought that the UPS was very sensitive.  Thanks for the
reply.