Re: [Networker] Library/Drive Names getting shuffled by Windows.

EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU> wrote on 
03/11/2008 07:54:47 PM:

> All set that is until you have to replace a drive unless you can force 
> it to take the serial number of the failed drive.

True. But replacing a drive should happen less often than a reboot, 
especially under Windows ...

> 
> Today at 6:06pm, Matthew Huff wrote:
> 
> > What's generally called "drive persistence" is a fiber channel 
> feature that under unix maps a Fiber Channel WWN to a fixed unix 
> device name. In windows, even with fiber channel drivers that 
> support "persistence", it merely maps the FC WWN to a lower level 
> device, however Windows "Plug & Player" driver will re-number the 
> device on top of that, so \\.\tape0 , etc could be a different drive
> each time (although normally it won't be, it's usually when 
> something in the order changes, the drives get renumbered differently.
> >
> > However, once you use either the IBM tape driver or Microsoft new 
> fix then the drivers will get created like \\.\tapeSERIALNUMBER so 
> that no matter what order they get created by the Plug & Play 
> driver, they will always have the same name. After the reboot you 
> will have to edit your jukebox with the new drive names, but you 
> should be set.

I am not sure how to do that - I've deleted and added the jukebox, but 
never had to edit one, to change a device name or configuration. What 
would I need to do?

> >
> > -----Original Message-----
> > From: EMC NetWorker discussion [mailto:[email protected].
> EDU] On Behalf Of James E. Pratt
> > Sent: Tuesday, March 11, 2008 5:43 PM
> > To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> > Subject: Re: [Networker] Library/Drive Names getting shuffled by 
Windows.
> >
> > Ok. So I am also afflicted with this "dev shuffle" issue. After 
looking
> > at this "hotfix", and comparing to our NW 7.4 windows 2003 r2 (patched
> > via windows update last week), I see I have a version number that is
> > much higher on tape.sys, so needless to say, after running regedit, I
> > see I also have the
> > \\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Tape\Persistence
> > value there, but alas it was set to 0 ... :(
> >
> > So I changed it to a 1. I'm not in a position to reboot right now
> > (backups are running), but I will indeed reboot it tomorrow to see if
> > the tape0-3 device names in winblows get shuffled again.
> >
> > Anyhow, I'm certainly not installing some hotfix that is from last 
july,
> > and are obviously outdated, given the versions on our server and the
> > ones in these kb's.. So, I'll let you know... I'm actually kind of
> > baffled this problem still exists at all to be honest. I had to fight 
it
> > for years with a physical (pos) hp msl series library with 6 drives. 
:\
> >
> > Lastly, what persistence are you talking about when you say it only
> > applies to *nix?
> >
> > Regards,
> > Jamie
> >
> >
> >
> >
> >
> >> -----Original Message-----
> >> From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT 
> >> EDU]
> >> On Behalf Of Matthew Huff
> >> Sent: Tuesday, March 11, 2008 4:02 PM
> >> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> >> Subject: Re: [Networker] Library/Drive Names getting shuffled by
> >> Windows.
> >>
> >> There really shouldn't be a need to do this. If you apply the windows
> >> hotfix, the device names change to ones that use the serial# of the
> >> drive, so they won't change even if the order changes.
> >>
> >> -----Original Message-----
> >> From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT 
> >> EDU]
> >> On Behalf Of MIchael Leone
> >> Sent: Tuesday, March 11, 2008 3:53 PM
> >> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> >> Subject: Re: [Networker] Library/Drive Names getting shuffled by
> >> Windows.
> >>
> >> "Hutchison, Jay A" <Jay.Hutchison AT va DOT gov> wrote on 03/11/2008 
03:13:00
> >> PM:
> >>
> >>> We have a procedure that does not require you to delete and recreate
> >> the
> >>> library if anyones interested. It`s just a rescan and reconfigure.
> >>
> >> I'd be interested, especially if it's automated ...
> >>
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> >
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> 
> -- 
> Frank Swasey                    | http://www.uvm.edu/~fcs
> Sr Systems Administrator        | Always remember: You are UNIQUE,
> University of Vermont           |    just like everyone else.
>    "I am not young enough to know everything." - Oscar Wilde (1854-1900)
> 
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