Re: Ultra2

[Lawrence <ychim@ForeverMail.com>]

you don't need to jumpper the seagate cheetah lp scsi hard disk, it is
auto-detected.  According to seagate, you will see a burst if plug your
u2w hard disk in u2w controller.

Lawrence

Christopher Barry wrote:
> 
> A lot of U2W disk drives can be jumpered to run in UW single ended mode, so that they
> can be run on a 2940UW or a 2940U2W without the U2W connecter working yet. I should note
> though that the cable that comes with U2W controllers (part # ACK-68I-U2W) uses a
> differential terminator and cannot be used to connect U2W drives to a 2940UW or to the
> UW connector on a 2940U2W and this is important because U2W drives being truly
> differential, like SCA drives, come with no means to provide termination, which must be
> provided by the cable. I've just had some email with Adaptec and Seagate about this
> because I might buy a second generation Seagate Cheetah which is a lot faster than the
> first generation Cheetah but is only available with U2W or better interfaces, and I see
> no need to spend over $300 for a new motherboard or 2940U2W card when I'm very happy
> with my 2940UW. So I'm ordering the U2W Cheetah and Adaptec's actively terminated UW
> ribbon cable (ACK-W2W-5IT) and I'm set.
> 
> I only bothered to write this because if you already have a U2W controller you can run
> U2W drives under Linux right now and you don't need to wait if you already possess or
> purchase an actively terminated UW cable and if you are interested in running a U2W
> drive without U2W SCSI you'll probably be able to so also without spending extra cash
> for an interface that provides 3-4 times more bandwidth you'll ever need unless you have
> a RAID.
> 
> Markus Lechner wrote:
> 
> > Hi Lawrence,
> >
> > I read on the kernel-list that the new boards run all except U2W - but
> > they
> > are working on it and it may soon be done. You can use the other
> > SCSI-Parts up to UW-SCSI without any problems. You simply can't use the
> > U2W-Part of your controller until they (the kernel and driver
> > developers)
> > get it done. I'm buying a new MB with U2W in a week, for example :)
> >
> > ok,
> >
> >         Mac
> >
> > Lawrence wrote:
> > >
> > > Does the current adaptec driver support Adaptec 2940U2W (Ultra2 Wide)
> > > scsi card?
> > >
> > > Lawrence
> > >
> > > --
> > > Unsubscribe?  mail -s unsubscribe debian-user-request@lists.debian.org < /dev/null
> >
> > --
> > Markus Lechner       (Company - LightWolf)      |   The
> > Prometheus-Project
> > Markus.Lechner@munich.netsurf.de                |
> > Mac@munich.netsurf.de
> > http://home.munich.netsurf.de/Markus.Lechner    |   (only for
> > Project-Team)
> > PGP-Public-Key(s) are available                 |
> >
> > --
> > Unsubscribe?  mail -s unsubscribe debian-user-request@lists.debian.org < /dev/null
> >


--  
Unsubscribe?  mail -s unsubscribe debian-user-request@lists.debian.org < /dev/null