ahc0 cannot see attached devices

[Dan Langille]

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. 
>> 
>> The old server is running FreeBSD 8.4-RELEASE and using:
>> 
>> ahc0: <Adaptec 2944 Ultra SCSI adapter> port 0xa800-0xa8ff mem 0xfb7df000-0xfb7dffff irq 20 at device 5.0 on pci1
>> 
>> 
>> The new server is running FreeBSD 9.1-RELEASE-p4 and using:
>> 
>> ahc0: <Adaptec 2940B Ultra2 SCSI adapter> port 0xe800-0xe8ff mem 0xfebdf000-0xfebdffff irq 21 at device 3.0 on pci4
>> 
> 
> 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… 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?
> 
> That is somewhat curious, but what you really need is an HVD card in your
> new server.

Anyone need an LVD card?

-- 
Dan Langille - http://langille.org