Date: Thu, 1 Aug 2013 17:18:32 -0400 From: Dan Langille <dan@langille.org> To: "Kenneth D. Merry" <ken@freebsd.org> Cc: freebsd-scsi@freebsd.org Subject: Re: ahc0 cannot see attached devices Message-ID: <10160B5D-42B8-4A83-B39D-7F46E72B1B04@langille.org> In-Reply-To: <20130801203111.GA15203@nargothrond.kdm.org> References: <11DCA597-E79A-4834-9CC9-EBE1AADE99D3@langille.org> <20130801203111.GA15203@nargothrond.kdm.org>
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On Aug 1, 2013, at 4:31 PM, Kenneth D. Merry wrote: > On Thu, Aug 01, 2013 at 15:48:13 -0400, Dan Langille wrote: >> I am in the process of moving a tape library from one server to = another.=20 >>=20 >> The old server is running FreeBSD 8.4-RELEASE and using: >>=20 >> ahc0: <Adaptec 2944 Ultra SCSI adapter> port 0xa800-0xa8ff mem = 0xfb7df000-0xfb7dffff irq 20 at device 5.0 on pci1 >>=20 >>=20 >> The new server is running FreeBSD 9.1-RELEASE-p4 and using: >>=20 >> ahc0: <Adaptec 2940B Ultra2 SCSI adapter> port 0xe800-0xe8ff mem = 0xfebdf000-0xfebdffff irq 21 at device 3.0 on pci4 >>=20 >=20 > IIRC, the 2944 is a HVD (High Voltage Differential) card. The 2940 is = a > single ended or LVD card. You can't connect HVD SCSI devices to a = non-HVD > card. Ken: Looking at the back of the hardware, and finding the symbol = printed on it=85 I compared what I found with: http://www.iec-usa.com/Browse05/DTSCSI.html#SCSYM Yes, it's Differential SCSI (HVD). I'll get the right card. Thank you. >> While the new server boots, I don't see an Adaptec card BIOS prompt / = mention pass by on the console. Is this the first problem to solve? >=20 > That is somewhat curious, but what you really need is an HVD card in = your > new server. Anyone need an LVD card? --=20 Dan Langille - http://langille.org
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