DLT not working on D clkass with fbackup/restore

[Steve Harad]

I have a DLT 4000 (TZ88) with proper firmware from COMPAQ. It works on my K class systems and functions fine on my D class using tar, dump & ftio. When I use fbackup, I get an error stating device cannot be opened/recognized. So where do I find the opject module patch that fixes this problem ???
thanx,
xox
sfh

[John Palmer]

Hi Steve,

One possible solution is this:-

Problem Description

We are having a problem with fbackup returning this error message:

DLT 3125 ERROR: write problem

How should we proceed?

Configuration Info

Operating System - HP-UX
Version -10.01
Hardware System -T500

Solution

This error on your DLT-4000 means it isn't set up in 7980S-emulation
mode, which is how it should be configured. Perform these steps:

1. Reconfigure the Digital Linear Tape (DLT) to change the switches to:

SW1=Don't care
SW2=Off
SW3=On
SW4=On
SW5=On
SW6=Off
SW7=Off

2. Reboot your system for the changes to be implemented.

Another is to apply the latest stape/tape2 driver patch PHKL_22286 for 10.20.

Regards,
John

[Ken Scharpell]

HP may not like the firmware on the DLT unit. HP has a habit of using their own firmware on disks and other peripherals. You may need to download firmware from the drive manufacturer - Quantum, thats the normal firmware used by HP drivers/commands. You copy it to a DLT, stick it in the drive and hey presto.

[Anonymous]

Hi Steve,

assuming that your K and D run the same version of hpux
you may want to check for differences of the versions of fbackup and your tape driver (eg "stape": the on indiacted in driver column of "ioscan -fkCtape")- eg

swlist -l product | grep -i -e stape -e fback
(or "what /usr/sbin/fbackup")

Once you've identified these should be a piece of cake...

RGDS
Thomas