Subject: Re: AHA-2940 UW SCSI adapter problems?
To: Andy Ruhl <>
From: Harry Waddell <>
List: port-i386
Date: 07/19/2005 11:10:07
On Tue, 19 Jul 2005 08:25:07 -0700
Andy Ruhl <> wrote:

> On 7/19/05, <> wrote:
> > Hi folks,
> > 
> > It seems that the AHA-2940 UW SCSI adapter has had problems
> > in the past.  Does this adapter work fine now in NetBSD 2.0.2
> > and -current?
> > 
> > There have been problems reported on Linux and BSD mailing
> > lists, although most of the issues seem to be old (6+ years
> > ago).
> > 
> > I have one of these cards and a Maxtor Atlas 10k RPM Ultra320
> > SCSI disk (well, waiting for them to arrive anyway).  Yeah,
> > would be nice if they worked.  ;-)
> I don't think the 2940UW is going to work with that disk, isn't that
> an LVD disk?
> The only problems I had with that card were firmware related.
> I've since moved on to Qlogic cards.

The 2940UW works pretty well, but it seems to lock up 1-2 times a year, 
depending on use patterns. I've had about 6 of these cards over time, with 
several different levels of firmaware and they have all behaved about the 
same way for me. The problems would most often occur during the wee hours of
the morning when backups are running, which made them especially annoying. 
I can't say if my experience is typical though.

I agree with Andy about qlogic. All my important servers which use scsi now
use qlogic cards. The isp driver has been pretty solid over the last three years
with every version of NetBSD I've thrown at it.

When last I compared the qlogic and adapter cards about three years ago, 
the isp driver seems to offer slightly lower performance [-10%] than the adaptec, 
but I'd rather have the stability. 

Harry Waddell