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jasondre

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17 years ago

J

jasondre

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January 7th, 2010 09:00

Device names

I'm wondering how NetWorker comes up with device names.  I just replaced a Dell 124T LTO-4 autoloader because the one we had went bad.  I muddled my way though deleting the bad one from within NetWorker and installing the new one.  My question is this.  The device name for the old autoloader was \\.\Tape2147483636, the device name for the new autoloader is \\.\Tape0.  What's up with that?  I've skimmed the 7.6 NetWorker Admin Guide but haven't found much yet.  I've also noticed that the device names for all of my VTLs are \\.\Tape2147483602, which is obviously similar to the device name of my old autoloader. 

I must have not done something correctly when I installed and configured the new autoloader, can anyone tell me what I screwed up?

  • AllanW1

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    Posted January 7th, 2010 12:00

    Hi Jason,

    Is persistent binding turned on for the drive?  This makes sure that if you reboot the system, drives do not get reordered.  If this happens, NetWorker will get   I believe the technical upgrade note has a section that describes how to set it.

    Thanks,

    Allan

  • jasondre

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    Posted January 7th, 2010 13:00

    Um, yeah, no idea if persistent binding is enabled or not.  I'll look into that.  Thanks Allan. 
  • AllanW1

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    Posted January 7th, 2010 13:00

    And I heard the goofy names come from Windows not NetWorker.  Guessing maybe the drive's serial#, but not sure...
  • jasondre

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    Posted January 8th, 2010 09:00

    Dang it, foiled by my alter-ego again.  I don't even know how I got logged in as "Dre". 
  • dre3

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    Posted January 8th, 2010 09:00

    After much searching and digging around on PowerLink, I've found where to set persistent binding on Windows Server 2003 R2.  It is a registry edit, however, it is already enabled.  I decided to try a chat session with EMC support and both times it went nowhere.  The first session was disconnected prematurely and the tech from the second session said I should open a ticket because this issue will need to use webex.  Which they can't do through the chat program. 

    I still don't get why this drive isn't using persistent binding but my other two VTLs are using persistent binding.  I also found a registry key where I could change the name of the Autoloader but after rebooting the server the name was changed back.  So, what is overriding the registry value?  This is a good one eh?

  • AllanW1

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    Posted January 8th, 2010 10:00

    I think you might have just hopped over into a support issue.  I'd open up that ticket and get them involved.  Maybe the library firmware is not returning a value the OS or NetWorker is expecting.

    As far as your dre name- I was also going to post some lyrics or a video from that album you had memorized... But after looking at them, don't think that would be wise. 

  • jasondre

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    Posted January 8th, 2010 11:00

    Yeah, I think I'm going to relent and open up a case with tech support.  And I don't think there are any clean lyrics on that entire cd!
  • 1417

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    Posted January 11th, 2010 02:00

    Hi,

    Persistant naming and persistant binding are two different things.

    When you say persistant binding, it's SAN related stuff, what target connect to which initiator. (Drifve/controller <--> Host )

    Persistant naming is related to windows internal "plug & play" naming your target to ex \\.\Tape0 (w.o. persist naming) or \\.\Tape2123455

    Persistant naming is done on driver level or global(instance) so it might be that you use different HBA:s for the two

    VTLs or do they use different drivers maybe?!

    There is good info in docs: Technical GUidance for Upgrades to EMC Networker 7.4sp2 and

                                           Configure Tape Devices for EMC NetWorker.

    But I assume that you already have them, as you searched powerlink.

    Good luck with the registry hacking,

    regards

    Håkan

  • shareef2

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    Posted January 11th, 2010 07:00

    Hello

    i am about a Newbie in Networker Support althaught i ve been using the champ for about 2 years but i am still walking my 1st steps ; however i have a feeling that this issue is purely related to OS<->hardware interaction

    i would recommend checking the drivers version against the new library and trying to kick a few CLI stuff ; changers , inquire , sjirdtag ,...... and see if the answers of those guys look consistent

    Happy troubleshooting

    Shareef

  • jasondre

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    Posted January 11th, 2010 07:00

    Shareef,

    I would agree with you that this seems to be an OS - hardware issue.  Unfortunately I'm not familiar with CLI commands so I need to just contact tech support about this.  Although I hate doing that, it is like admitting defeat!  haha