Date: Fri, 2 Nov 2018 09:50:26 -0500 (CDT) From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us> To: Miroslav Lachman <000.fbsd@quip.cz> Cc: freebsd-fs@freebsd.org Subject: Re: zpool scrub 9TB finishes in ~40 mins Message-ID: <alpine.GSO.2.20.1811020946001.23195@scrappy.simplesystems.org> In-Reply-To: <d073e2c5-38f8-c152-b37a-f7e6e08f520b@quip.cz> References: <5BDC3DF5.9020501@andyit.com.au> <d073e2c5-38f8-c152-b37a-f7e6e08f520b@quip.cz>
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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/
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