[NTLUG:Discuss] aic7xxx: infinite timed-out, ressetting onRed Hat install

[Michael Owens]

With regard to "the bios", I was (perhaps sloppily) referring to the Mylex bios. I
disabled it in order to boot from the Ultr160 I installed.  The Ultra160 itself has
not direct relation with the Mylex controller. There are two SCSI ports on the
motherboard: one for Ultra2  devices and one for ultra wides (which the tape drive
came installed on). Termination was provived by the cable on the latter. So to reduce
the number of variables, I put the Ultra160 on it.

When I brought in Red Hat 6.2 today, everything went off without a hitch.  Whether it
is due to being either a Seagate, or Ultra160 in general,  or me just having a bad
day yesterday, I have no idea. All I know is that with Red Hat 6.2 with no changes
from last night, it worked.

Once it worked, I moved to Ultra160 to the Ultra2 port using the cable and terminator
I got from Frys. It worked fine as well.

For the curious, I will get more detailed info on what is what and where on the
system if you like.



Kevin Brannen wrote:

> Kyle_Davenport at compusa.com wrote:
> >
> > No, don't blame the hard drive.  I have a Quantum Atlas IV u160/m that works
> > without a problem.  They are supposed to be backwardly compatible.  160Mb/s is
>
> Indeed!  And they make a SCSI3 -> SCSI2 converter, so why make
> converter if they aren't backward compatible? :-)  All you lose is
> bandwidth.
>
> > the bandwidth for dual controllers - you would need at least 5 of those hard
> > drives to saturate it.
> >
> > I don't see how the AIC7xxx driver is supposed to work if you've disabled the
> > bios!
>
> If I understand correctly, the BIOS is used only for booting.  I have
> an Adaptec 2930B and the BIOS is off on all IDs and it works just
> fine, since I boot from /dev/hda.
>
> Kevin
>
> >
> > ________________________________________________
> >
> > Mike <owensmk at earthlink.net> on 04/30/2000 11:07:09 PM
> >
> > Please respond to discuss at ntlug.org
> >
> > To:   discuss at ntlug.org
> > cc:    (bcc: Kyle Davenport/Is/Corporate/CompUSA)
> > Subject:  Re: [NTLUG:Discuss] aic7xxx: infinite timed-out, ressetting on Red Hat
> >       install
> >
> > Since I posted the initial message, I got some more info on Ultra160
> > drives. I didn't know this was a SCSI-3 drive. I am not sure what
> > support there is for this kind of drive. I think the problem might go
> > away if I just got an Ultra2 drive. I kind of just asked for "a SCSI
> > drive" from the people at Fry's, and they gave me a very nice one. But I
> > don't think I will, or even can, make use of 160 Mb/sec with the
> > hardware I have.
> >
> > All along, I have just wanted to get this machine up and running on
> > Linux, bask in the light of the accomplishment, and then after the mail,
> > database, and web servers are all doing their thing, ...then get a finer
> > appreciation of all things SCSI. So I may just go back tomorrow and ask
> > for a more modest drive, and get on with it.
> >
> > Kevin Brannen wrote:
> > >
> > > Mike wrote:
> > > >
> > > > This is my first SCSI machine. I got a Micron NetFrame 3400, with a
> > > > Mylex RAID controller. According to Mylex, I learned that Red Hat will
> > > > boot on the RAID device only if there are 3 or fewer partitions. They
> > > > suggested adding another drive on the SCSI controller and installing the
> > > > OS on it. Then I could partition the RAID device and mount them
> > > > wherever. So I got a Seagate Barracuda 18 Gig ST318436LW Ultra 160 from
> > > > Fry's.
> > >
> > > Internal or external?
> > >
> > > >
> > > > I disabled the Adaptec bios for the RAID controller, as told by Micron.
> > >
> > > That assumes you have E/IDE drives on your system too.  If you have
> > > only SCSI, I believe you'll need the BIOS turned on for ID-0.
>
> _______________________________________________
> http://ntlug.org/mailman/listinfo/discuss