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  1. #1
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    Default Volume Status=Full yet Pct Util: 46.5 and Pct. Reclaimable Space: 54.3 ???

    My TSM server is starting to go through tapes like candy again, which may be a completly different problem than what I am asking here but I have to know...

    When I q vol on my tapepool, i get a list of tons of STATUS=FULL tapes that could/should be reclaimed becuase there is tons of space on them. I would imagine I am not understanding something. Anyone care to help? Thanks a bunch. Here is an example:

    Volume Name Storage Device Estimated Pct Volume
    Pool Name Class Name Capacity Util Status
    ------------------------ ----------- ---------- --------- ----- --------
    001171 TAPEPOOL LTOTAPE 272.3 G 52.5 Full
    001382 TAPEPOOL LTOTAPE 411.0 G 39.7 Full
    001388 TAPEPOOL LTOTAPE 324.1 G 99.9 Full
    001511L3 TAPEPOOL LTOTAPE 405.3 G 100.0 Full
    001528L3 TAPEPOOL LTOTAPE 568.1 G 60.1 Full
    001529L3 TAPEPOOL LTOTAPE 693.3 G 48.5 Full
    001531L3 TAPEPOOL LTOTAPE 405.4 G 100.0 Full
    001533L3 TAPEPOOL LTOTAPE 405.8 G 100.0 Full
    001536L3 TAPEPOOL LTOTAPE 405.3 G 75.4 Full
    001538L3 TAPEPOOL LTOTAPE 588.7 G 44.3 Full
    001539L3 TAPEPOOL LTOTAPE 411.7 G 57.7 Full
    001543L3 TAPEPOOL LTOTAPE 406.0 G 99.7 Full
    001545L3 TAPEPOOL LTOTAPE 474.5 G 89.4 Full
    001561L3 TAPEPOOL LTOTAPE 482.8 G 85.4 Full
    001568L3 TAPEPOOL LTOTAPE 486.0 G 86.4 Full
    001569L3 TAPEPOOL LTOTAPE 518.8 G 77.9 Full
    001581L3 TAPEPOOL LTOTAPE 403.9 G 69.7 Full
    001585L3 TAPEPOOL LTOTAPE 507.3 G 72.6 Full
    001597L3 TAPEPOOL LTOTAPE 611.5 G 51.0 Full
    001609L3 TAPEPOOL LTOTAPE 616.4 G 48.3 Full
    001618L3 TAPEPOOL LTOTAPE 519.2 G 67.0 Full
    001620L3 TAPEPOOL LTOTAPE 580.4 G 49.6 Full
    001630L3 TAPEPOOL LTOTAPE 521.9 G 65.0 Full
    001633L3 TAPEPOOL LTOTAPE 461.2 G 91.7 Full
    001642L3 TAPEPOOL LTOTAPE 405.7 G 100.0 Full
    001644L3 TAPEPOOL LTOTAPE 405.7 G 100.0 Full
    001646L3 TAPEPOOL LTOTAPE 482.1 G 75.4 Full
    001648L3 TAPEPOOL LTOTAPE 579.9 G 63.7 Full
    001649L3 TAPEPOOL LTOTAPE 407.0 G 99.8 Full
    001656L3 TAPEPOOL LTOTAPE 509.2 G 73.7 Full
    001657L3 TAPEPOOL LTOTAPE 405.6 G 100.0 Full
    001659L3 TAPEPOOL LTOTAPE 450.3 G 91.8 Full
    001673L3 TAPEPOOL LTOTAPE 436.0 G 92.8 Full
    001677L3 TAPEPOOL LTOTAPE 405.4 G 100.0 Full
    001679L3 TAPEPOOL LTOTAPE 556.4 G 63.3 Full
    001683L3 TAPEPOOL LTOTAPE 430.8 G 99.3 Full
    001691L3 TAPEPOOL LTOTAPE 583.7 G 57.0 Full
    001707L3 TAPEPOOL LTOTAPE 451.9 G 98.7 Full
    001710L3 TAPEPOOL LTOTAPE 402.9 G 100.0 Full
    001711L3 TAPEPOOL LTOTAPE 404.6 G 99.8 Full
    001712L3 TAPEPOOL LTOTAPE 428.2 G 86.1 Full
    001713L3 TAPEPOOL LTOTAPE 571.6 G 59.3 Full
    001717L3 TAPEPOOL LTOTAPE 450.7 G 84.6 Full
    001719L3 TAPEPOOL LTOTAPE 620.9 G 56.0 Full
    001720L3 TAPEPOOL LTOTAPE 498.9 G 70.9 Full
    001727L3 TAPEPOOL LTOTAPE 504.1 G 69.7 Full
    001728L3 TAPEPOOL LTOTAPE 566.8 G 52.0 Full
    001730L3 TAPEPOOL LTOTAPE 559.7 G 65.9 Full
    001732L3 TAPEPOOL LTOTAPE 506.6 G 88.3 Full
    001736L3 TAPEPOOL LTOTAPE 550.7 G 62.1 Full
    001737L3 TAPEPOOL LTOTAPE 539.7 G 99.9 Full
    001742L3 TAPEPOOL LTOTAPE 417.8 G 88.6 Full

  2. #2
    Moderator moon-buddy's Avatar
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    Expiration running? If it is, this explains why the tapes says 48.5%, 63.7%, etc FULL.

    Run reclamation to maximize tape usage.
    Ed

  3. #3
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    Quote Originally Posted by moon-buddy View Post
    Expiration running? If it is, this explains why the tapes says 48.5%, 63.7%, etc FULL.

    Run reclamation to maximize tape usage.

    Yes reclamation is running. I guess I am thinking about this backwards then, if the tape 64.7% full, then it should have 36% free, and be marked as FILLING and allow more data to be written to it?

  4. #4
    Senior Member Sunhillow's Avatar
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    No, at the same time the tape is filled with new data, other data on it may expire due to retainment policies. And once end of tape is reached, the tape is marked FULL because sequential backup systems usually never write into the (virtual!) gaps on the tape that are created during expiration.
    hg

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    This is strange. I did not know that it worked that way. Seems wasteful. I thought reclamation handeled this.

  6. #6
    Moderator moon-buddy's Avatar
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    Quote Originally Posted by dannyblair View Post
    This is strange. I did not know that it worked that way. Seems wasteful. I thought reclamation handeled this.
    This is not wasteful as this is the only way to ensure data protection/security - not to over write anything!

    This is what reclamation was designed for.
    Ed

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