[OmniOS-discuss] performance penalty of a slow mirror

[Entfernt]

On Fri, 16 Aug 2013 11:47:39 +0200
Jim Klimov <jimklimov at cos.ru> wrote:

> Overall, with reports that USB is not a very reliable connection method,
> it would IMHO be safer to use the external disk as a separate pool and
> set up regular replication of snapshots (perhaps with a handler script
> in the zfs-auto-snap SMF services).

Thanks for the reply.

I'm attracted to the extra-mirror method because it ensures that the copy is always up to date with no extra work.  Backups involving mirrors will always lag behind the live situation.  How about either:
(1) detaching and re-attaching the USB disk occasionally ?
(2) occasional scrubbing ?

-- 
Michael Mounteney