Date: Tue, 6 Nov 2007 16:48:19 +0100 From: Borja Marcos <borjam@sarenet.es> To: Scott Long <scottl@samsco.org> Cc: freebsd-scsi@freebsd.org Subject: Re: MFI and passthrough Message-ID: <A5B54593-6C21-4A1C-9382-370E34D4364C@sarenet.es> In-Reply-To: <4730821B.3060403@samsco.org> References: <200711052127.lA5LRblV035714@ambrisko.com> <4730821B.3060403@samsco.org>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Nov 6, 2007, at 4:02 PM, Scott Long wrote: > Doug Ambrisko wrote: >> BTW, it works great in this mode if you know what you are doing :-) > > Can you explain what that means? I recommend against it because it's > not a well-tested configuration either in FreeBSD or in Dell. It's > not > clear, at least to me, how basic things like i/o errors get > handled; does SCSI sense data get consumed by the controller > firmware, or is it > passed through to the OS without problem? Aha, I see. I assumed that the controller would pass the sense data, etc, without problems. >> | I do believe that Dell does sell a direct attached disk option for >> | the 2950/1950 called the PERC5/e. It's essentially an LSI MPT-SAS >> | controller that directly replaces the PERC5/i card that you have >> now. >> | It should be able to control all 6 disk slots, and can do both SAS >> | and SATA. >> I've been told the PERC5/e and PERC5/i are the same except for PCI >> sub-device ID and are both the mfi(4) RAID controllers. They do >> have a mpt(4) based card but it only supports 4 bays. I'm not sure >> what it's real name is but we have some lying around for random >> testing. I don't leave them in machines. > > We should get a definitive answer on this. We asked our Dell salesman and he confirmed that there's a non disk array card for this machine, but it only supports 4 disks, not 6. Borja -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (Darwin) iD8DBQFHMIzGULpVo4XWgJ8RAkYvAJ9D9WrQIGVKXjS5SYgEHJBGJAvcdgCfYZts jrV84cxmIWKkcMfuX+ceChI= =wucb -----END PGP SIGNATURE-----
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