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Date: Fri, 2 Nov 2018 09:50:26 -0500 (CDT)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
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To: Miroslav Lachman <000.fbsd@quip.cz>
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Subject: Re: zpool scrub 9TB finishes in ~40 mins
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On Fri, 2 Nov 2018, Miroslav Lachman wrote:
>
> I definitely need this speed of scrub! 238M/s is awesome.
> I have RAIDZ from 4x ST4000VN000-1H4168 SC43 and the speed of scrub is about 
> 20MB/s.

I appear to see an average rate of 335 MB/s here using an 
Illumos-based system with 16 2GB nearline-SAS drives.  The data 
transfer rates reported during scrub is perhaps 850 MB/s but there are 
many snapshots in this pool.

Rates with an all-SSD pool can be far higher.

Bob
-- 
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/