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Hi gurus,

I don't understand what happen but this is the scenario. I've got an N
class (N4000) with hpux 11.00 installed with HP DLT8000 tape drive
attached. Went to DR site several weeks ago to perform restoration. The
targeted machine is also an N class (N4000) but it was attached with a
Quantum DLT8000 Tape Drive. When I started to boot from the tape in the
DR N4000, the booting process stucked. One of the technical staff there
told me I should use a HP DLT tape drive. I don't think that is the
issue. I replaced the Quantum with a Compaq DLT 40/80 tape drive but
still the same problem. So I've decided to follow the technical staff
advice by replacing the Quantum and Compaq with a HP DLT8000 tape
drive. It works! Can anyone tell me why this happen. From the bch, I
can see all the tape drives are detected and should be able to become
potential boot devices.

Any comments are highly appreciated.

Thanks!

In article <1156469276.946161.220060@74g2000cwt.googlegroups. com>,
mrkhairy@yahoo.com writes:
> Hi gurus,
>
> I don't understand what happen but this is the scenario. I've got an N
> class (N4000) with hpux 11.00 installed with HP DLT8000 tape drive
> attached. Went to DR site several weeks ago to perform restoration. The
> targeted machine is also an N class (N4000) but it was attached with a
> Quantum DLT8000 Tape Drive. When I started to boot from the tape in the
> DR N4000, the booting process stucked. One of the technical staff there
> told me I should use a HP DLT tape drive. I don't think that is the
> issue. I replaced the Quantum with a Compaq DLT 40/80 tape drive but
> still the same problem. So I've decided to follow the technical staff
> advice by replacing the Quantum and Compaq with a HP DLT8000 tape
> drive. It works! Can anyone tell me why this happen. From the bch, I
> can see all the tape drives are detected and should be able to become
> potential boot devices.
>
> Any comments are highly appreciated.
>
> Thanks!
>
Helllo,

according to a HP technician you cannot boot from a generic DLT tape drive. HP drives have special firmware, so the HP boot loader can work with them.

Yours, Hans Martin.

root wrote:
> In article <1156469276.946161.220060@74g2000cwt.googlegroups. com>,
> mrkhairy@yahoo.com writes:
> > Hi gurus,
> >
> > I don't understand what happen but this is the scenario. I've got an N
> > class (N4000) with hpux 11.00 installed with HP DLT8000 tape drive
> > attached. Went to DR site several weeks ago to perform restoration. The
> > targeted machine is also an N class (N4000) but it was attached with a
> > Quantum DLT8000 Tape Drive. When I started to boot from the tape in the
> > DR N4000, the booting process stucked. One of the technical staff there
> > told me I should use a HP DLT tape drive. I don't think that is the
> > issue. I replaced the Quantum with a Compaq DLT 40/80 tape drive but
> > still the same problem. So I've decided to follow the technical staff
> > advice by replacing the Quantum and Compaq with a HP DLT8000 tape
> > drive. It works! Can anyone tell me why this happen. From the bch, I
> > can see all the tape drives are detected and should be able to become
> > potential boot devices.
> >
> > Any comments are highly appreciated.
> >
> > Thanks!
> >
> Helllo,
>
> according to a HP technician you cannot boot from a generic DLT tape drive. HP drives have special firmware, so the HP boot loader can work with them.
>
> Yours, Hans Martin.

And with what Hans just said, keep in mind that since HP purchaesd
Compaq/Digital, you might be able to get whatever firmware is necessary
from them for your Compaq DLT40/80 tape drive to make it bootable.

Charles R. Whealton
Charles Whealton @ pleasedontspam.com

root wrote:
> In article <1156469276.946161.220060@74g2000cwt.googlegroups. com>,
> mrkhairy@yahoo.com writes:
> > Hi gurus,
> >
> > I don't understand what happen but this is the scenario. I've got an N
> > class (N4000) with hpux 11.00 installed with HP DLT8000 tape drive
> > attached. Went to DR site several weeks ago to perform restoration. The
> > targeted machine is also an N class (N4000) but it was attached with a
> > Quantum DLT8000 Tape Drive. When I started to boot from the tape in the
> > DR N4000, the booting process stucked. One of the technical staff there
> > told me I should use a HP DLT tape drive. I don't think that is the
> > issue. I replaced the Quantum with a Compaq DLT 40/80 tape drive but
> > still the same problem. So I've decided to follow the technical staff
> > advice by replacing the Quantum and Compaq with a HP DLT8000 tape
> > drive. It works! Can anyone tell me why this happen. From the bch, I
> > can see all the tape drives are detected and should be able to become
> > potential boot devices.
> >
> > Any comments are highly appreciated.
> >
> > Thanks!
> >
> Helllo,
>
> according to a HP technician you cannot boot from a generic DLT tape drive. HP drives have special firmware, so the HP boot loader can work with them.
>
> Yours, Hans Martin.

And with what Hans just said, keep in mind that since HP purchased
Compaq/Digital, you might be able to get whatever firmware is necessary
from them for your Compaq DLT40/80 tape drive to make it bootable.

Charles R. Whealton
Charles Whealton @ pleasedontspam.com

Chuck Whealton wrote:
> root wrote:
> > In article <1156469276.946161.220060@74g2000cwt.googlegroups. com>,
> > mrkhairy@yahoo.com writes:
> > > Hi gurus,
> > >
> > > I don't understand what happen but this is the scenario. I've got an N
> > > class (N4000) with hpux 11.00 installed with HP DLT8000 tape drive
> > > attached. Went to DR site several weeks ago to perform restoration. The
> > > targeted machine is also an N class (N4000) but it was attached with a
> > > Quantum DLT8000 Tape Drive. When I started to boot from the tape in the
> > > DR N4000, the booting process stucked. One of the technical staff there
> > > told me I should use a HP DLT tape drive. I don't think that is the
> > > issue. I replaced the Quantum with a Compaq DLT 40/80 tape drive but
> > > still the same problem. So I've decided to follow the technical staff
> > > advice by replacing the Quantum and Compaq with a HP DLT8000 tape
> > > drive. It works! Can anyone tell me why this happen. From the bch, I
> > > can see all the tape drives are detected and should be able to become
> > > potential boot devices.
> > >
> > > Any comments are highly appreciated.
> > >
> > > Thanks!
> > >
> > Helllo,
> >
> > according to a HP technician you cannot boot from a generic DLT tape drive. HP drives have special firmware, so the HP boot loader can work with them.
> >
> > Yours, Hans Martin.
>
> And with what Hans just said, keep in mind that since HP purchased
> Compaq/Digital, you might be able to get whatever firmware is necessary
> from them for your Compaq DLT40/80 tape drive to make it bootable.
>
> Charles R. Whealton
> Charles Whealton @ pleasedontspam.com

Thanks all! I will keep that in mind.

root@heron.bfi.admin.ch (root) writes:

[...]
> Helllo,
>
> according to a HP technician you cannot boot from a generic DLT tape drive. HP drives have special firmware, so the HP boot loader can work with them.
>
> Yours, Hans Martin.

I always thought _system_ or HBA firmware (not device firmware) is responsible
for booting. For my old PC the same SCSI CD-ROM drive would boot after the
SCSI controlle rgot a new firmware; befor ethat it tried to boot, but failed
(depending on the boot method on the CD).

Maybe the system firmware checks the drive's firmware to decide whether to
boot from it. That seems to be the HP way of doing things...

Regards,
Ulrich