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

[Kevin Brannen]

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.