Date: Sat, 18 Jan 1997 01:53:33 -0800 (PST) From: "Rodney W. Grimes" <rgrimes@GndRsh.aac.dev.com> To: gibbs@thefly.plutotech.com (Justin T. Gibbs) Cc: jmb@freefall.freebsd.org, questions@freefall.freebsd.org, hardware@freefall.freebsd.org Subject: Re: [Q] aah-2940uw, disk need low level format Message-ID: <199701180953.BAA24847@GndRsh.aac.dev.com> In-Reply-To: <199701172126.NAA00599@thefly.plutotech.com> from "Justin T. Gibbs" at "Jan 17, 97 01:26:29 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
> >called adaptec support. after changing a number of controller
> >parameters on the aha-2940uw, each followed by a reboot. adaptec
> >says "you have to low level format". they state that the geometry
> >used by the aha-1540cp is not compatible with the aha-2940uw because
> >the aha-1540cp runs the scsi bus at 5 MB/s async and the aha-2940uw
> >want to run the scsi bus at 10 MB/s sync.
> >
> >this is the first time that i have heard such a recommendation.
> >does this match anyone's experience?
>
> Its not uncommon to have to dump and restore the data on a drive when
> switching between controllers with different translations (this is only
> neccessary if you need to boot off of the disk or access it via DOS BTW),
> but the 1540 and 2940 should have the same translation options. The transfer
> speed should not affect how the data is stored on the media. It sounds
> to me like the support tech you talked to was either on drugs or figured that
> by the time you low leveled the drive and restored your data and called back,
> he'd have gone home already. Perhpas have some sort of IRQ conflict with an
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> ISA device?
^^^^^^^^^^
I missed that one, and given then point of the hang his diagnosis
has a higher chance of being right than mine!
I bet you have an IRQ problem, not necessarily a conflict, but you
might not have the PCI slot IRQ enabled, or enough PCI IRQ's in the
list of avaliable ones (depnds on who's BIOS you have as to what
way the settings work.)
--
Rod Grimes rgrimes@gndrsh.aac.dev.com
Accurate Automation, Inc. Reliable computers for FreeBSD
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199701180953.BAA24847>