> From: Julien Cigar <jcigar@ul...> - 2008-12-04 16:14
>  
> On Thu, 2008-12-04 at 15:44 +0000, Alan Brown wrote:
>> On Wed, 3 Dec 2008, Julien Cigar wrote:
>> 
>> > > Which model and revision?
>> >
>> > I posted the full output on the FreeBSD ML some times ago :
>> > http://lists.freebsd.org/pipermail/freebsd-scsi/2008-November/003706.html
>> 
>> Is that Ultra or LVD?
>> 
>> Ultra 160/320 single-ended scsi have maximum cable lengths in the region
>> of 60-90cm.
>> 
>> LVD is several metres.
>> 
> 
> I think it's an Ultra, there are only two connectors on it (plus one to
> connect to the SCSI card). Actually it's configured as this :
> SCSI CARD ====== TAPE DRIVE ====== TERMINATOR
> 
> Just to be sure that everything is compatible (as I'm not a SCSI
> expert), the tape drive has the following interface : 
> - Embedded SCSI interface (Ultra160LVD, Single-ended or Low Voltage
> differential)
> 
> but the SCSI cards I tested are not U160, the last one was one from
> QLogic :
> - QLA1020/104x Fast-Wide-SCSI "Fast!SCSI IQ" Host Adapter'
> 
> and at boot it's detected as :
> 
> sa0 at isp0 bus 0 target 5 lun 0
> sa0: <SONY SDX-700C 0103> Removable Sequential Access SCSI-2 device 
> sa0: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
> 
> I hope everything is compatible (U160 vs SCSI 2 ?)
> 
> Thanks for your help,
> Julien
>  

After noting that my cable length is quite a bit longer than 90cm I 
checked around... Just a minor nit-pick...Ultra 160's cable length is 
12m and it is LVD.

http://en.wikipedia.org/wiki/SCSI#cite_ref-length_7-0

But anyway, one shouldn't try to drive a LVD peripheral with a single 
ended SCSI controller, as Alan pointed out in another post.

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