Re: [ADSM-L] 3494 and 3592 WORM media
2008-03-12 18:01:15
That's kinda what I inferred from the (limited) documentation. Just wanted
confirmation.
True, until you get to 5.4 release. The the developers decided that the
MEDIATYPE column in the LIBVOLUMES table should be changed
from INTEGER to VARCHAR(16) and on my 5.4.1.0 system the Q LIBV F=D on my
TS3310 with LTO3 drives shows 'Unknown' in that column.
But a big thanks Richard!!
Bill Boyer
"Nothing is foolproof to a sufficiently talented fool." - Murphy
-----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
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