9940 Tape Drives and Compression

[A. Daniel King_1]

Hi, folks.

I'm setting up several 9940s (in 9840 emulation mode). My application vendor requires that I write data in an uncompressed format.

Q: How do I guarantee that I'm writing in uncompressed format?

I understand that I'll need to create device files, but i'd like to be sure that I've done the right thing.

$/usr/bin/ll d9840
crw-rw-rw- 1 bin bin 205 0x31c287 Nov 18 18:36 d9840

$lssf d9840
stape card instance 49 SCSI target 12 SCSI LUN 2 berkeley unknown density "TYPE_DEPENDENT7" at address 2/2/0.1.19.255.11.12.2 d9840

Any insight is appreciated. Any insight particular to the 9940 specifically is especially appreciated. HP-UX 11.0, V2200.