Decreasing speed is a good idea; I remember (now, why don't I two days
ago) that there were/are similar problems with the Aha1542 (does anybody
remember this one?). You have the choice to set the speed to 10 MB/s at
the 1542-bios, but the the disk isn't found until you decrease to 5.5
MB/s...
But I am not sure if that is the reason for the timeout - I guess
(again) it is the controller of the disk.
Greetings, Dietmar
Charles Galpin wrote:
>
> 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
> >
> >
> >-
> >To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> >the body of a message to [EMAIL PROTECTED]
>
> -- Charles Galpin <[EMAIL PROTECTED]>
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> the body of a message to [EMAIL PROTECTED]
--
We all have lack of knowledge...
Dietmar Stein, Systemadministrator UNIX/Linux
[EMAIL PROTECTED], [EMAIL PROTECTED]
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