Date: Thu, 26 Mar 2020 12:54:34 +0100 From: Julien Cigar <julien@perdition.city> To: David Christensen <dpchrist@holgerdanske.com> Cc: freebsd-questions@freebsd.org Subject: Re: drive selection for disk arrays Message-ID: <20200326115434.GC1179@x1> In-Reply-To: <713db821-8f69-b41a-75b7-a412a0824c43@holgerdanske.com> References: <20200325081814.GK35528@mithril.foucry.net> <713db821-8f69-b41a-75b7-a412a0824c43@holgerdanske.com>
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On Wed, Mar 25, 2020 at 03:19:35PM -0700, David Christensen wrote: > Jacques Foucry wrote: > > > ALWAYS (when it's possible) buy and use disks from different brand (mix > > seagate, WD, etc..) in order to avoid same series and same MTBF. > > Not always possible.. On some (?) HPE hardware (but not only?) using Non-HPE drives make the fans to run at maximum speed (I guess it can't read the drives temperatures). > > I know this to late in this case, but keep this in mind. > > > > I know this will not help in this case, please excuse my > > intervention if it's inappropriate. > > > To date, most of my arrays have been composed of similar drives. But, I run > a SOHO LAN and have limited experience. I have been wondering about using > dissimilar drives to prevent simultaneous common-mode failures. > > > Backblaze publishes statistics for individual drives: > > https://www.backblaze.com/blog/hard-drive-stats-q2-2019/ > > > I would be curious to read any data or reports comparing arrays of similar > drives vs. arrays of dissimilar drives. > > > Have anyone seen a failure involving multiple similar drives all failing in > the same mode at the same time? > > > David > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" -- Julien Cigar Belgian Biodiversity Platform (http://www.biodiversity.be) PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 No trees were killed in the creation of this message. However, many electrons were terribly inconvenienced.
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