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Date: Fri, 10 Feb 2006 08:56:11 -0500
From: Tom Grove <freebsd@voidmain.net>
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To: Andrea Venturoli <ml.diespammer@netfence.it>
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Cc: freebsd-questions@freebsd.org
Subject: Re: SDR GEM312P
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Andrea Venturoli wrote:

> Tom Grove wrote:
>
>> Andrea Venturoli wrote:
>>
>>> Hello.
>>> I'm building a new server and stumbled upon this:
>>>
>>> > ses0 at ahd0 bus 0 target 8 lun 0
>>> > ses0: <SDR GEM318P 1> Fixed Processor SCSI-2 device
>>> > ses0: 3.300MB/s transfers
>>> > ses0: SAF-TE Compliant Device
>>>
>>> I guess it has something to do with a SCSI hot-swap device, but I 
>>> didn't find any info on it.
>>> What is it? What's its purpose? Can I do something nice with it?
>>>
>> It's your scsi processor...i guess it's nice because it allows you to 
>> use scsi hardware.
>
>
> Not really. That's:
>
> > ahd0: [GIANT-LOCKED]
> > aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 50-66Mhz, 512 SCBs
> > ahd1: <Adaptec AIC7902 Ultra320 SCSI adapter> port 
> 0x3c00-0x3cff,0x3800-0x38ff
> > mem 0xfe302000-0xfe303fff irq 27 at device 5.1 on pci9
> > ahd1: [GIANT-LOCKED]
> > aic7902: Ultra320 Wide Channel B, SCSI Id=7, PCI-X 50-66Mhz, 512 SCBs
>
>
>
>  bye & Thanks
>     av.
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>
aic7902 is the controller card...the board that has your scsi channels 
and such.  SDR GEM318P 1 is the processor on the aforementioned board.  
It's similar to a regular motherboard in that you would have a things 
like ata0 and cpu0 except here you have ahd0 and ses0.

-Tom