Subject: Re: Support for Adaptec 2930 in NetBSD-current?
To: Eric Damien Berna <firstname.lastname@example.org>
From: Michael K. Sanders <email@example.com>
Date: 07/21/1998 09:04:40
In message <firstname.lastname@example.org>, Eric Damien Berna writes:
>As far as I can tell, the 2930 is an Ultra SCSI card and the 2940 is an
>Ultra Wide SCSI card. The 2930 uses an 8bit data bus and the 2940 can use a
>16bit bus, therefore the 2940 can achieve up to twice the throughput. The
>2940 is overkill for anything but high speed Ultra Wide SCSI drives. I have
>three 2940s controlling high speed RAID 0 arrays on workstations for photo
>editing on the network I manage. Adaptec even offers a 2940U2W that is an
>Ultra 2 Wide adaptor that can get 80 MB per second transfer rates. Now that
>would be fast (where's the company check book? :) ).
I don't know anything about the 2930, but this is not quite correct.
The 2940 comes in both Ultra and Ultra Wide versions-- the 2940U and
2940UW, repsectively. There are also non-Ultra Narrow and Wide
versions-- the 2940 and 2940W. The straight 2940 is just Fast SCSI-2.