Re: High Capacity Tapes

     It wasn't wrong or right, just your choice... What happened, from what
     I've seen here is:
     I left my 3590 tapes with no estimated capacity, so a scratch (when
     first used / gets its first file, and it resets every time it goes
     scratch) shows 10 GB.  As the tape fills (and remains under 10GB) it
     reflects estimated capacity of 10GB and the % util is based on the
     amount of data against the 10 GB.  When the data on the tape exceeds
     10 GB the estimated capacity stays even with the amount of data on the
     tape and the % utilized stays at 100% so I see stuff like:
     AAB009 3590P2       3590DEVC     10,000.0   40.8  Filling
     AAB010 3590P2       3590DEVC     10,000.0   38.1  Filling
     AAB011 3590P2       3590DEVC     10,000.0   14.0  Filling
     AAB012 3590P2       3590DEVC     20,112.5  100.0    Full
     AAB013 3590P2       3590DEVC     17,498.4   92.5  Filling
     AAB014 3590P2       3590DEVC     34,392.6  100.0  Filling
     AAB016 3590P2       3590DEVC     17,178.8  100.0  Filling
     AAB017 3590P2       3590DEVC     34,552.4  100.0  Filling
     AAB018 3590P2       3590DEVC      9,371.8   99.9    Full

     You need to remember that what ADSM is reporting is the amount of data
     as it sees it. So if a person sends a 20GB file of ascii Hex 20's
     compression would probably turn that into about 1KB on the tape but it
     would still be 20GB of user file space so reports/queries would list
     20GB.  If that same user was running compression their node would only
     send about 1KB for that 20GB file so reports/queries would
     show/reflect the 1KB...


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However, when I do a q vol, I get the following
However, when I do a q vol, I get the following

970307                    ARCHIVETAPE  EXB-AUTO1         0.0    0.0
Empty
HC001                     TAPEPOOL     7331-8MM      4,944.0    2.3
Empty
TAPE01                    TAPEPOOL     7331-8MM      4,475.9   63.8
Full

I then went ahead and did an update devclass declaring the estcapacity
to be 7G.
I now have the following out put from q vol:

970307                    ARCHIVETAPE  EXB-AUTO1         0.0    0.0
Empty
HC001                     TAPEPOOL     7331-8MM      7,168.0    3.0
Filling
TAPE01                    TAPEPOOL     7331-8MM      4,475.9   59.1
Full

Is this the right way of doing this, or did I do a bad one here?

I'm now doing a move data from TAPE01 to HC001 (as you can probably
guess, the
HC001 is the 160m tape).

TIA

Francisco
--
Francisco Franco                e-mail: francisco.franco AT hydro.on DOT ca
Francisco Franco                e-mail: francisco.franco AT hydro.on DOT ca
Ontario Hydro                   tel:    (416) 592-9477
700 University Ave              fax:    (416)
Toronto, Ont.