I am getting error 84's on HP LTO drives in an HP L700 library.  The
tapes succesfully mount, and start writing a backup image, but after
about 1.8 GB stops with an error 84:

09/18/2002 11:04:23 wayback chico.cs  FREEZING media id 700002, too many
data
                    blocks written, check tape/driver block size
configuration

We are using Netbackup 3.4 patched to NB_34_3 on Solaris 8.

The Veritas knowledge base references this exact error, with the advice
to:
Configure the /kernel/drv/st.conf file so that drives are being written
in variable length mode.
See: http://seer.support.veritas.com/docs/248548.htm

Based on Solaris documentation, our entry in st.conf reads:

"HP      Ultrium", "HP Ultrium", "ULTRIUM",
ULTRIUM = 1,0x36,0,0xd639,4,0x00,0x00,0x00,0x40,3;

The drives in question are HP LTO/Utrium 1 SCSI Model A6323A HVDS

Where the 3 field as '0' is supposed to be variable length.  Doesn any
one either know what the problem is, or have a working st.conf entry for
HP Ultrium drives?

Thanks very much in advance....Gerrit