Date: Wed, 30 Sep 2015 11:43:52 +0000 From: =?utf-8?B?S2FybGkgU2rDtmJlcmc=?= <karli.sjoberg@slu.se> To: Tom Evans <tevans.uk@googlemail.com> Cc: "freebsd-fs@freebsd.org" <freebsd-fs@freebsd.org> Subject: Re: Cannot replace broken hard drive with LSI HBA Message-ID: <1443613432.5271.100.camel@data-b104.adm.slu.se> In-Reply-To: <CAFHbX1%2BdZRyJUMa6nuC8S0NspocAfpRrfWC=ZHW6WeExt_j=qA@mail.gmail.com> References: <1443447383.5271.66.camel@data-b104.adm.slu.se> <5609578E.1050606@physics.umn.edu> <560A4640.3030200@internetx.com> <560A9461.8090300@physics.umn.edu> <560A977C.1070102@internetx.com> <560AD2B9.5040706@fuckner.net> <CAOjFWZ69Jw6D1Mo5GyZvHfpTaHW7Dg1-z=LNZ_1PN_YAhy3jrA@mail.gmail.com> <CAFHbX1%2BdZRyJUMa6nuC8S0NspocAfpRrfWC=ZHW6WeExt_j=qA@mail.gmail.com>
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ons 2015-09-30 klockan 12:39 +0100 skrev Tom Evans via freebsd-fs: > On Tue, Sep 29, 2015 at 7:25 PM, Freddie Cash <fjwcash@gmail.com> wrote: > > On Tue, Sep 29, 2015 at 11:04 AM, Michael Fuckner <michael@fuckner.net> > > wrote: > > > >> On 9/29/2015 3:51 PM, InterNetX - Juergen Gotteswinter wrote: > >> > >>> From my Experience using SATA Disks on SAS Controllers, no matter if > >>> theres an Expander between or not or mixed, those Setups keep on beeing > >>> flakey / unreliable. I might work under certain conditions, but its > >>> nothing you can bet on. > >>> > >>> Garret Damore (Illumos Project) describes the problem more detailed here > >>> > >>> http://garrett.damore.org/2010/08/why-sas-sata-is-not-such-great-idea.html > >>> > >>> > >> come on, the article is 5 years old, some things changed since then! > >> > >> - MUX Boards are unreliable and expensive- long time since I last saw > >> those boards > >> - SAS Disks are not just 10/15k high performance Disks anymore, most > >> Nearline Disks are available with native SAS interface as well > >> - if you pick the right disk there is no trouble using SATA Disks on SAS > >> Expanders or SAS Controllers (they should have R/V sensors, optimized > >> FW...). > >> - if you use desktop drives in a shelf with lets say 24 slots you should > >> not expect it to work ;-) > >> > > > > Why not? ;) > > > > We use desktop-class drives in our backups storage servers without any > > issues. Even the monster boxes with 90 drives in them (2 JBODs of 45 > > drives each) run without issues using desktop-class drives. > > > > We're using a mix of WD Black (1, 2, 4 TB), Toshiba (2 TB), and Seagate (1, > > 2 TB). > > > > 2 systems using 24 drive bays. 2 systems using 90 drive bays. Plugged > > into SuperMicro SAS expanders and LSI 9211-8i or 9211-8e (I think that's > > the model number) controllers. All SAS2008 chipsets using mps(4) drivers. > > > > Just a me too. This is just for my own personal storage (so everything > is second hand from ebay), but I use LSI SAS2008 [1], which is mps(4), > with a couple of Rackable SE3016 16 bay enclosures, using around 20 of > the cheapest SATA drives[2] I could afford at the time. I've never had > any problems with it, my party trick[3] is to pull and swap drive > locations, it does a full scrub every other weekend, and I've replaced > several drives that have died and resilvered with no complications. > > Of course, I don't put that much stress on the hardware, so I'm aware > that problems may not be occurring for me because of that. Perhaps > I've just been lucky so far, but they are easily the best $300 I've > spent on ebay. > > No SSDs however, they are all directly attached to motherboard SATA controllers. > > Cheers > > Tom > > [1] With firmware 15, in IT mode - I know, I should update.. > [2] Currently a mix of "SAMSUNG HD154UI 1118", "TOSHIBA DT01ABA3 ABB0" > and "WDC WD30EZRX-00M 0A80". Yep, super-cheap consumer desktop hard > drives. > [3] Yes, they are quite dull parties. > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" Which version FreeBSD is it running? /K
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