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FILLING tapes

niro

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Hi Guys,
I would like to understand how TSM is treated FILLING tapes. I found that some FILLING tapes are not used (no write) for weeks.
I can move that data to other tape. But looking for some documentation how TSM is FILLING tapes. Is there only one "active" FILLING tape? Any idea where I can find such details
 

Harry_Redl

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Hi,
tape (sequential volume) can be written by a single session/process only - therefore it is normal to have multiple tapes in "filling" state in the storage pool just because several threads write concurrently to one stgpool. Another possibility is you have your storage pool set to "collocation" - if it is on (or group - without any nodegroups defined), then TSM tries to store data of single node to dedicated volumes (until it runs out of volumes - then it can mix it ....) - setting collocation to "no" means stgpool tries to fill "filling" tapes first.
Can this be your situation?
Harry
 

niro

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Thanks, in my case it was lack of disk pool space. But generally was trying to figure out some algorithm, order of tapes that are using. Thanks for links. What are predefined empty volumes, what is different between them and scratches?
 

marclant

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Predefined volumes are volumes you define with the define volume command. They never get deleted after reclamation, they are just brought back to empty and ready to be used again.
 

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The Spectrum Protect TLA (Three-Letter Acronym): ISP or something else?

  • Every product needs a TLA, Let's call it ISP (IBM Spectrum Protect).

    Votes: 18 18.2%
  • Keep using TSM for Spectrum Protect.

    Votes: 61 61.6%
  • Let's be formal and just say Spectrum Protect

    Votes: 12 12.1%
  • Other (please comement)

    Votes: 8 8.1%

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