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.
Didn't know a few facts. Thanks for the insight :)
> 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.
In my case: I need the new boards for memory intensive apps. This
involves (in my case) a
SMP-RAID machine. So i'm glad to read that the U2W is working :) It's
planned to set such
a box up (the RAID part) in 3-4 weeks.
(got a little offtopic)
ok,
Mac
>
> 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
> > >
> > > --
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> >
> > --
> > Markus Lechner (Company - LightWolf) | The
> > Prometheus-Project
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