> I think that if you are running an illumos kernel, you can use
> /kernel/drv/sd.conf
> That refers to creating a new pool and is good to know.

Two things: one, it looks like you should also be able to trick it
into using 512 sectors on a 4k disk, allowing you to do exactly such a
replacement (incurring a similar write penalty to undetected 512
emulated sectors, but at least your pool won't be degraded, though
regular scrubs may be more important), and two, a caveat: the current
OpenIndiana oi_151a4 release doesn't seem to have a new enough version
of illumos to support this yet, at least the man page for sd doesn't
mention the needed tunable.

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