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From: Pete French <petefrench@ticketswitch.com>
Date: Mon, 15 Jun 2009 08:48:02 +0100
Cc: freebsd-stable@freebsd.org
Subject: Re: Does this disk/filesystem layout look sane to you?
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> The new 2tb disk you buy can very often be actually a few sectors
> smaller then the disk you are trying to replace, this in turn will
> lead to zfs not accepting the new disk as a replacement, because it's
> smaller (no matter how small).

Heh - you are in for a pleasent surprise my friend! ;-) If you actually
try this in practice you will find ZFS *does* accept a smaller drive as
a replacement. Preseumably to cope with the natural variability in sector
size that you describe.

Surprised me too the first time I saw it...

-pete.