Does drive APPLICATION level encryption work on WORM? So if I make my new worm 
devclass WORM=YES and DRIVEENCRYPTION=ON I'll get
encrypted WORM media.

Bill Boyer

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Richard Sims
Sent: Wednesday, March 12, 2008 11:55 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: 3494 and 3592 WORM media

On Mar 12, 2008, at 10:24 AM, William Boyer wrote:

> ... What just isn't connecting is how does TSM know a regular scratch
> tape from a WORM scratch tape? ...

Good question.  The TSM manuals leave that unexplained.  The redbook 
"Implementing IBM Tape in Unix Systems" provides some
insight...

"Because Tivoli Storage Manager can distinguish between WORM and R/W cartridges 
(assigns "media type" of 412 for WORM cartridges and
411 for R/W cartridges at the time of check-in), you can have both WORM and R/W 
cartridges in a single logical library just by
defining device classes, one with WORM=yes and the other with WORM=no."

There are some things which TSM knows "under the covers".  Media type is 
revealed in the output of the Query LIBVolume command.

    Richard Sims    at Boston University