1 Reply Latest reply on Apr 9, 2008 9:32 AM by dmaster

    Do you see a hba in device manager with VM's on ESX 3.5 ?

    dmaster Expert
    vExpertVMware Employees

      Hello..

       

      I enabled the Fibre Channel NPIV setting in the advanced options of the virtual machine and generated new WWN's..

       

      Do you or should you then see a hba in the device manager of your virtual machine on VMware ESX  Server 3.5 ?

       

      Why is this only possible when i attach a RDM device to the virtual machine ?

       

      I don't see the benefits anymore ? Who can explain this to me..

       

      I allready are aware of the following documents.. Configuring and Troubleshooting N-Port ID Virtualization and ESX3.x-VC2.x-ServiceConsole-Guide.pdf

       

      Thanx

        • 1. Re: Do you see a hba in device manager with VM's on ESX 3.5 ?
          dmaster Expert
          VMware EmployeesvExpert

           

          I found my answer in the following message in another discussion..

           

           

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          Well it depends on what you are trying to do.

           

           

          What happens is that the SAN will "see" each vm (i.e.each vm will have a WWN you can set in their properties). It's not true the other way around though (i.e. the vm will (not) see the SAN).

           

           

          The vm will only and always see a SCSI virtual adapter (not a FC virtual HBA) but your SCSI virtual adapter will be "marked" to expose a virtual WWN (this makes your SAN people happy but this doesn't necessarily make you (the server guy) happier than before). I haven't read the documentation yet and haven't played with it so far so I am just trying to remember what I have seen / heard in the last few months.

           

           

          While I can't claim to be an expert on backup ... I doubt VCB will ever be supported within a VM (at least just because of this new technology). And certainly this won't change the overall VMware strategy that could be summarized in "keep away physical tapes from the ESX hosts / vm's".

           

           

          NPIV support on VMware 3.5 is really meant to make the SAN admin happier. This doesn't necessarily mean it's a good thing (in my opinion at least): http://it20.info/blogs/main/archive/2007/03/11/4.aspx

           

           

          Massimo.

           

           

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