[aclug-L] Re: SCSI Reference Sheet

[John Goerzen <jgoerzen@xxxxxxxxxxxx>]

I looked at it on Dale's site.

Here's some constructive criticism :-)

Wide SCSI comes only in 68-pin configurations.

SCSI-1 and SCSI-2 are signaling protocols.  Generally all types of
physical links are possible with SCSI-2.  SCSI-3 does not exist, which 
is made trickier by many vendors labeling of UW or U2W cards as
SCSI-3.

Non-wide communication never uses 68 pins.  However it is possible to
use a 68-pin connector but just not utilize all the pins.

The 50-pin connector is generally called the 'mini-50'.

Linux's README file for the ncr53c8xx has a nice summary of the
NCR/Symbios cards.

Usually the transfer rate is expressed in terms of signalling
frequency; ie 5MHz instead of 5Mtps.

SCSI-1 devices are not generally, if ever, wide.

-- John

"James G." <jamesga@xxxxxxxxxxxxx> writes:

> Hi...
> 
> I spent the last half of the week researching SCSI.
> 
> As a result, I made a quick reference sheet on SCSI (for those
> interested in getting a CD-RW or Scanner for your Linux machine).
> 
> If you find mistakes, email me and I will fix it and re-post a new one.
> 
> James G.
> 
> 
> 
> -- Binary/unsupported file stripped by Listar --
> -- Type: application/x-gzip
> -- File: scsi.ps.gz
> 
> 
> 

-- 
John Goerzen   Linux, Unix consulting & programming   jgoerzen@xxxxxxxxxxxx |
Developer, Debian GNU/Linux (Free powerful OS upgrade)       www.debian.org |
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The 802,739th digit of pi is 1.