I had the same problems with a 2940UW and Western Digital drives (WDE9100
SCSI 3, but 50 pin). I did manage to get them going, but only at 10Mb
synchronous. Anything higher an I'd get corruptions/timeouts/resets. This
was with 2.0.35 and 2.2.1. I have not tried to change the settings on 2.2.6
or put in Doug's latest driver, since I don't have the time to save my data
and try to see if I can get it to go at 40 without problems.
Looks like you may have to drop down to 10Mb. Waste of expensive drives and
expensive card !
Zygmunt Wiercioch
-----Original Message-----
From: Charles Galpin [mailto:[EMAIL PROTECTED]]
Sent: April 20, 1999 12:52
To: Dr. Robert J. Meier; Linux-Scsi
Subject: RE: adaptec 2940U2W/ibm ultrastar 9ES problem
Hi Bob
Yes, this is what adaptec suggested. I took it down to 40, and then 20
Mbytes/s, but got the same timeout errors.
The funny thing (well not really) is that with adaptec's drivers under NT it
seems fine, although I have no way of determining if it is performing as
expected - seems pretty fast.
At this point I'm sorely dissapointed. I spent more on the controller/drive
than I did on my last linux system (the entire thing) a year ago which
intsalled effortlessly and performs like a champ. I can't even run linux on
this hardware.
Bob. Did you install from scratch with the 2940U2W? If so, what kernel and
scsi driver version were you running when you installed?
Can ayone suggest a different drive if I choose to return this?
Does anyone suspect the contoller over the drive?
thanks
charles
===== Original Message from "Dr. Robert J. Meier"
<[EMAIL PROTECTED]> at 4/20/99 11:34 am
>Charles,
>
> I recently purchased a Seagate 9G SCSI LVD/ultra 2 wide)
>Hard Drive (Baracuda) and Adaptec 2940 U2W controller. I suspect
>that the IBM 9G Hard drive may also be a Baracuda. I ran into
>unreliability problems that appear to represent an overrating of
>speed for the hard disk read amplifiers. The workaround that
>I am using is a reduced bus speed. I intend to contact Seagate
>to see if they will help, though the problem was not discovered
>within the 30d warranty period.
>
> To use the Adaptec Bios setup
> 1. Turn on computer power.
> 2. Type \C-a when indicated during power-up.
> (Be ready. The time window is ~2s.)
> 3. Select SCSI configuration.
> 4. Move to column logical unit 0 (or as appropriate).
> 5. Select speed (default is 80.0 Mbytes/s).
> 6. Reduce speed to 53.4 Mbytes/s.
> 7. Exit (\E)
> 8. Confirm save of settings.
> 9. Exit (\E)
> 10. Confirm exit of setup program.
>
> I have similarly tried different cables, termination, and
>mount options without affecting behavior.
>
>Please let me know what you find.
>
>Bob
>
>
>-
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