Date: Tue, 28 Jun 2011 00:06:33 +0200 From: Leon =?iso-8859-15?Q?Me=DFner?= <l.messner@physik.tu-berlin.de> To: freebsd-questions@freebsd.org Subject: Re: SAS controller for FreeBSD Message-ID: <20110627220633.GH74606@emmi.physik-pool.tu-berlin.de> In-Reply-To: <alpine.LFD.2.00.1106251625540.6821@nber7.nber.org> References: <alpine.LFD.2.00.1106241843120.22469@nber7.nber.org> <20110625153923.GG74606@emmi.physik-pool.tu-berlin.de> <alpine.LFD.2.00.1106251625540.6821@nber7.nber.org>
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On Sat, Jun 25, 2011 at 04:47:19PM -0400, Daniel Feenberg wrote: > > > On Sat, 25 Jun 2011, Leon Meßner wrote: > > > On Fri, Jun 24, 2011 at 06:51:37PM -0400, Daniel Feenberg wrote: > > ... > >> > >> There are some SAS RAID controllers that claim to support FreeBSD but I > >> can't tell if their JBOD mode is a true pass-through, or leaves some > >> undesirable junk on the disk. > >> > >> So does anyone have a recomendation for a reasonably priced SAS > >> controller? We aren't looking for anything fancy at this point. > > > > We are using two of the LSI SAS2008 based cards here and have no > > problems with them. Be sure to run a recent STABLE as the mps driver is > > relatively new. Speed and reliability are very nice. The only thing we > > February of this year: > > http://lists.freebsd.org/pipermail/freebsd-scsi/2011-February/004784.html > > > are missing is IR-Firmware support but if you only want a HBA this won't > > bother you. > > If I search the LSI website for "SAS2008" the first hit includes a > description of the chipset features, including the bullet point > > * Integrated RAID > > All the cards on the LSI website that I can find using the SAS2008 chipset > include the sentence "Integrated RAID avoids additional host CPU overhead" > in their brief description, even the ones labeled "HBA". Apparently the > FreeBSD driver does not include an interface to the RAID capability, but > it seems that the chipset still provides it. I suppose this still avoids > controller lock in, so it should be satisfactory. Can I ask what model you > have? We are running the SAS 9200-8e and the onboard version on the X8SI6-F Mainboard from Supermicro. It was possible to Flash IT-Firmware on Systems that had been delivered with IR-Firmware. I think they removed that feature from their flashing utility. cheers, Leon
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