Excellent information! You have no idea how much I appreciate everyone's
input. We've got a HVD controller on the box so it sounds like I'll be stuck
on the built-in SE bus. That still opens up several options though sice
performance is fotunately not a big issue. Thanks!

"Denys Beauchemin" <[log in to unmask]> wrote in message
news:5JadnT5kyLSpNHmjXTWcqQ@fidnet.com...
> Whilst I did warn about the 4GB limitation, I do not think either of my
brothers did because they are not aware of said limitation.
> :)
>
> Any SCSI device you can electrically connect, with the proper interface,
will work.  It does not have to be listed in
> IODFAULT.PUB.SYS.  If the device you are plugging in uses a 50-pin SE-SCSI
(AKA Fast SCSI-2) connection, simply use an entry in
> IODFAULT that is also for a 50-pin Fast SCSI-2 device (drive is
SCSI_DISC_DM).  If the device you are plugging in connects to the
> FWSCSI (AKA HVD Ultra SCSI) controller, use an entry from IODFAULT for a
Fast Wide Differential SCSI disk drive (driver is
> SCSI_DISC_AND_ARRAY_DM).
>
> Finding HVD (High Voltage Differential) SCSI drives is going to be
interesting, there has not been one manufactured in over 3 years.
> Everything is either LVD (Low Voltage Differential) or FC (Fiber Channel)
nowadays.  If you are on an A- or N-class machine, you can
> attach these devices directly with no problems.  If you have an older
machine, you can either buy used disk drives or you can get
> converters or routers.  Crossroads in Austin, makes a device called the
SA20 or SA40, which stands for Server Attach.  This device
> allows you to connect the very latest FC devices in a SAN environment to
your HSC architecture HP 3000 servers.   www.crossroads.com
>
> You can also buy LVD to HVD converters from www.paralan.com, look for
LVD/MSE to HVD converter MH16A.
>
> There are only two drivers on MPE for disk drives. SCSI_DISK_DM is for any
disk attached to an SE controller, and
> SCSI_DISK_AND_ARRAY_DM is for any storage attached to the FWSCSI
controller.
>
> Finally, you cannot edit IODFAULT.PUB.SYS.
>
>
> Denys
>
> -----Original Message-----
> From: HP-3000 Systems Discussion [mailto:[log in to unmask]]On Behalf
Of Ray Dowling
> Sent: Monday, June 09, 2003 8:32 AM
> To: [log in to unmask]
> Subject: Re: SCSI drive compatibility / size limitations
>
>  We are on 6.5 and everyone and his brother has been kind enough to remind
me
> of the 4GB limitation for ldev 1!  :)
>
> Since upgrading the OS is out of the question I guess I'm really trying to
> determine what drives I can use in addition to that. Ideally, I'd like to
> stick two 36GB drives on the box in addition to the boot device. I've
> unfortunately been unable to determine what drives I might be able to use
> for this.... Any SCSI device with an electrically compatible interface or
> only those listed in IODFAULT.PUB.SYS? For that matter, can I alter
> IODFAULT.PUB.SYS without worry? Any advice or pointers to information
would
> be much appreciated.
>
> "steve macsisak" <[log in to unmask]> wrote in message
> news:3EDF66A8.2030004@macsisak.com...
>
> > If you only have one 73gb drive and its ldev 1 then you need to be on
> > 7.5  before you can access more then 4GB on ldev 1. I don't know what
> > release supported 73gb drives but it is OS software dependent. As to
> > which drives work ????
> >
> >
> > Ray Dowling wrote:
> > >  I've never been responsible for or worked with a MPE system but with
> > > staffing in my shop running rather thin lately I'm trying to get
> familiar
> > > with it. We have a 918LX that would be useful for this purpose but
it's
> > > current disk space is lower than that required by our software and
data.
> The
> > > general consensus seems to be that drives don't have to be blessed by
HP
> to
> > > work on the 3000 but I'm curious as to what  other things to look out
> for.
> > > For instance, does the drive have to be specifically listed in
> > > IODFAULT.PUB.SYS? How about size limitations? Speed aside, will my 918

> be
> > > just as happy with a 73GB disk as it would with a cabinet full of 2GB
> > > drives? Thanks in advance for and advice or pointers.
> > >
> > >  Ray Dowling
> > >
> > >
> > >
> >
>
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