Date: Wed, 30 Sep 2015 14:03:47 +0200 From: Marc UBM <ubm.freebsd@googlemail.com> To: freebsd-fs@freebsd.org Subject: Re: Cannot replace broken hard drive with LSI HBA Message-ID: <20150930140347.fcc10439bd1b1c9bee87d560@gmail.com> In-Reply-To: <1443613432.5271.100.camel@data-b104.adm.slu.se> 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> <1443613432.5271.100.camel@data-b104.adm.slu.se>
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On Wed, 30 Sep 2015 11:43:52 +0000 Karli Sj=F6berg <karli.sjoberg@slu.se> wrote: > 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.ne= t> > > > 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 be= eing > > >>> 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-id= ea.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 sh= ould > > >> 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 Seaga= te (1, > > > 2 TB). > > > > > > 2 systems using 24 drive bays. 2 systems using 90 drive bays. Plugg= ed > > > into SuperMicro SAS expanders and LSI 9211-8i or 9211-8e (I think tha= t's > > > the model number) controllers. All SAS2008 chipsets using mps(4) dri= vers. > > > > >=20 > > 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. > >=20 > > 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. > >=20 > > No SSDs however, they are all directly attached to motherboard SATA con= trollers. > >=20 > > Cheers > >=20 > > Tom > >=20 > > [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" >=20 >=20 > Which version FreeBSD is it running? Just a "me too" here, running a mix of 16 consumer-/servergrade SATA-drives (WD and Samsung) on a LSI SAS2116 (mps, flashed with IT firmware (JBOD)). Drives are connected with a SAS-4x SATA cable (1m length). I've been running regular scrubs and encountered no problems at all so far - the system is used as a file server with low usage though. FreeBSD version is 10.1-BETA1. Bye Marc=20
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