Can I boot HP-UX from DLT 80

[Goran Kubelka]

Hello,
I have rp5470 server with HP-UX 11i.
As a backup device is used DLT 80 drive instalated in HP Tape Array 5300.

Is it possible to boot the system from tape(DLT) createad with "make_tape_recovery"?

Is it true that I can only boot the system from DDS tape but not from DLT 80?

Regards

[Pete Randall]

I use DLT 8000 drives with no problems, so I believe your DLT 80 should be supported as well.


Pete

[Steven E. Protter · Accepted solution]

It depends.

If the drive is accesed via a SAN you may not be able to boot off of it.

Here is how to test:

make_tape_recovery put tape in drive.

boot your HP-9000 server from the console

interupt at the 10 second prompt

sea


See what sequential devices come up.

The DLT should have a number for example P6 next to it.

bo p6

N Do not interact.

See what happens. If the kernel loads you are cool. If not you may need helper software or a direct scsi connection to the drive.

SEP

[Goran Kubelka]

Steven,
The drive is connected with SCSI Cable as DAS.

[Pete Randall]

Goran,

Here's the DLT section from the release notes:


4.4 DLT Tape Boot Issues
=========================

DLT is attached to HP 9000 Enterprise servers via Fast-Wide
Differential interface cards. DLT boot WILL NOT work when
attached via single-ended SCSI. DLT boot IS NOT supported for
systems that use NIO Fast-Wide Differential SCSI cards (Part
number 28696A). The matrix below explains systems (by class)
along with the bus types required for DLT to be recognized as
a bootable media device.

CLASS | BUS | SCSI Interface Card | DLT boot support? | Notes
----------------------------------------------------------------------
K-Class | HSC | A2969A FWD | yes | 1,2
| NIO | A28655A SE, A28696A FWD | no |
--------------------------------------------------------------------
D-Class | HSC | A4107A FWD | yes | 2
| Core | | no |
| EISA | | no |
--------------------------------------------------------------------
T-Class | HSC | A3644A FWD | no |
| NIO | A28655A SE | no |
--------------------------------------------------------------------
N-Class | PCI | FWD | yes |
--------------------------------------------------------------------
L-Class | PCI | FWD | yes |
--------------------------------------------------------------------
V-Class | PCI | A4800A FWD | yes | 4
--------------------------------------------------------------------
E-Class | NIO | A28655A SE, A28696A FWD | no | 3
--------------------------------------------------------------------
G-Class | NIO | A28655A SE, A28696A FWD | no | 3
--------------------------------------------------------------------
H-Class | NIO | A28655A SE, A28696A FWD | no | 3
--------------------------------------------------------------------
I-Class | NIO | A28655A SE, A28696A FWD | no | 3


Notes:

1. This class system has two internal bus types, HSC and NIO.
DLT is only bootable from the HSC bus.

2. The HSC and GSC busses are the same busses. These terms are used
interchangeably.

3. NIO and HP-PB refer to the same bus.

4. IPR (Independent Peripheral Release). A firmware upgrade
(at least 4.3, product number B6044AA) is required to enable tape
boot for the V-Class. The release date for firmware upgrade
version 4.3 is September 1998. Contact your HP representative
about required firmware upgrades.



Your RP5470 is supported.


Pete