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Library sharing vs Dynamic Drive Sharing

Posted by Preston on 2009-10-12


The text of this post is available at the NetWorker Information Blog. Click here to read it.


4 Responses to “Library sharing vs Dynamic Drive Sharing”

  1. aimen said

    thank you very interesting post.
    Is there any doc about possible scsi reset ? a list of softwares causing it?

    • Preston said

      The documentation is maintained almost on a HBA by HBA and driver-by-driver basis. Different operating systems require different levels of intervention as well. For instance, in Windows systems a key requirement seems to ensure that the driver doesn’t send a ResetTPRLO.

      Some pages that may get you started include:

      This QLogic Configuration File
      This HP Discussion
      This old Legato Tech Bulletin

      In order to best work out what you need to do, I’d suggest to run some Google searches on the keywords: tape mask SCSI reset SAN — but also include the OS and HBA(s) that you are using.

  2. aimen said

    Isometimes networker tries to load tapes to some drives but it shows (device busy) however that drive is not writing.
    I have Emulex HBA am looking for tapereset parameter that I cannot find.
    Since my server is connected to some clariion I installed the Emulex driver from EMC tab. May Be I have to install the IBM one.
    What do you think ?
    thanks a lot

    • Preston said

      I can’t really say for sure – it’s been a while since I’ve used Emulex HBAs … normally though if supplied by EMC I tended to stick to the EMC drivers.

      On Windows systems at least the parameters to mask/hide SCSI resets were usually found in the configuration utility for the card. Unfortunately again, since it’s been a while since I’ve worked with Emulex cards, I can’t point you at where those settings are…

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