From owner-freebsd-scsi@FreeBSD.ORG Tue Nov 6 15:48:33 2007 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 40BEC16A419 for ; Tue, 6 Nov 2007 15:48:33 +0000 (UTC) (envelope-from borjam@sarenet.es) Received: from proxypop1.sarenet.es (proxypop1.sarenet.es [194.30.0.99]) by mx1.freebsd.org (Postfix) with ESMTP id F2D7B13C4AA for ; Tue, 6 Nov 2007 15:48:32 +0000 (UTC) (envelope-from borjam@sarenet.es) Received: from [172.16.1.167] (izaro.sarenet.es [192.148.167.11]) by proxypop1.sarenet.es (Postfix) with ESMTP id 934855D58; Tue, 6 Nov 2007 16:48:23 +0100 (CET) In-Reply-To: <4730821B.3060403@samsco.org> References: <200711052127.lA5LRblV035714@ambrisko.com> <4730821B.3060403@samsco.org> Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: Borja Marcos Date: Tue, 6 Nov 2007 16:48:19 +0100 To: Scott Long X-Pgp-Agent: GPGMail 1.1.1 (Tiger) X-Mailer: Apple Mail (2.752.2) Cc: freebsd-scsi@freebsd.org Subject: Re: MFI and passthrough X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Nov 2007 15:48:33 -0000 -----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-----