Date: Thu, 14 Nov 2013 14:29:20 +0100 From: Miroslav Lachman <000.fbsd@quip.cz> To: Borja Marcos <borjam@sarenet.es> Cc: "freebsd-fs@FreeBSD.org" <freebsd-fs@FreeBSD.org> Subject: Re: Controller for ZFS Message-ID: <5284D030.30904@quip.cz> In-Reply-To: <49F719A9-AC50-4917-8809-F51EBD4F5D0F@sarenet.es> References: <CEA907F4.12261%shawn.wallbridge@imaginaryforces.com> <49F719A9-AC50-4917-8809-F51EBD4F5D0F@sarenet.es>
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Borja Marcos wrote: > > On Nov 13, 2013, at 7:41 PM, Shawn Wallbridge wrote: [...] > The one I use is sold by Dell as the "H200". They usually try to disuade you by saying that it's not intelligent, doesn't > offer RAID, some of their "configuration aids" even forbid it... I just tell the salesman to shut up because I know much better than him. > > The only problem: beware if you are using a built-in backplane in the server, some manufacturers insist on using different > cabling schemes for different controllers and you could run into stupid problems because of that. The second problem is, that you cannot boot RAIDZ[23] from the H200. I tried it 2 years ago on Dell server and the problem was that BIOS shows only the first drive until the OS is fully booted, so the loader cannot boot from RAIDZ. Workaround: I did a small partition on each drive, created 4 way ZFS mirror with base system and another pool for data as RAIDZ. My controller is identified as: mps0: <LSI SAS2008> port 0x2000-0x20ff mem 0xc1240000-0xc124ffff,0xc1200000-0xc123ffff irq 16 at device 0.0 on pci1 mps0: Firmware: 07.15.04.00 mps0: IOCCapabilities: 185c<ScsiTaskFull,DiagTrace,SnapBuf,EEDP,TransRetry,IR> mps0: [ITHREAD] Miroslav Lachman
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