ADSM-L

Tape question

2015-10-04 17:13:40
Subject: Tape question
From: Fred Johanson [mailto:fred AT MIDWAY.UCHICAGO DOT EDU]
To: ADSM-L AT VM.MARIST DOT EDU
One of my users has a special project to backup 800 Gb for a few days and
then throw it away.  Since we've just cleaned the test machine to put up
V4R2, I agreed and let him have the test machine for 3-4 days.  The machine
is configured just like production, in particular the DEVC=TAPE:

        Device Class Name: TAPE
   Device Access Strategy: Sequential
       Storage Pool Count: 7
              Device Type: 3590
                   Format: DRIVE
    Est/Max Capacity (MB):
              Mount Limit: DRIVES
         Mount Wait (min): 60
    Mount Retention (min): 2
             Label Prefix: ADSM
                  Library: TSMLIB

The drive is a 3590-E, which experience shows will hold 50-100 Gb,
depending on compression.  I put 30 new cartridges into the 3494, whcih
should have sufficed him with room to spare.

However, what I'm seeing consistently is a tape being marked full at
18.5-18.8 Gb.  It appears that all the files are pretty much the same size,
and there are lots of them.  But what can I do to get more onto a volume???
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