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Moving LPAR resources on schedule

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  • Moving LPAR resources on schedule

    Before we went to an LPAR setup we had two Iseries that were both connected to the same tape library. The first system would perform its backup, vary off the device then the other system would vary on the tape drive and complete its own backup.

    This setup works great.

    Now these two systems have been moved to an LPAR system. The previous backup scenario no longer works because it takes human intervention to move the tape resource between partitions.

    There are 3rd party vendors that make software that can help automate this; however, this approach requires more $$$$. Are there any other methods to accomplish this task that can be done in house?

    Thanks in advance...

  • #2
    Re: Moving LPAR resources on schedule

    I don't know how to automate this, but we found a workaround by using a Virtual Tape Device to backup LPAR2, then did DUPTAP in the morning after we manully moved the tape to the second LPAR. We could optionally FTP the VT to LPAR1 and complete backup from there.

    Of course, you need enough DASD .....

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    • #3
      Re: Moving LPAR resources on schedule

      Actually, you don't have to have human intervention.

      Assuming you're using the HMC for the LPARs:

      Run your scheduled backup job on Sys1. At the end of the backup, have the system Vary Off (VRYCFG) the TAPE Device.

      At a known time when Sys1 Backup will be complete/varied off, have the HMC automatically transfer the device to Sys2. Knowing that this will be completed, have Sys2 then run your Backup job there, complete the job and vary the device off.

      Sometime when all is finished, have the HMC Transfer the device from Sys2 back to Sys1, then start all over again the following night.

      These options are available on the HMC configuration. The key is timing the VARY OFF / ON with the HMC Resource Transfer.

      hth

      -Rick

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      • #4
        Re: Moving LPAR resources on schedule

        We have our tape devices connected to multiple systems and shared between em, first system to vary it on and lock it gets the drive.

        Haven't had to transfer resources anywheres ?

        BRMS allows this to happen all by itself if you have IBM kit I am sure as we do it now with 3590E drives (stand alone drives with 10 stach feeders) that we can use on 2 systems as we like.
        Greg Craill: "Life's hard - Get a helmet !!"

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