Page 71 of the Device Config Guide references this obliquely. I can't find a technote, but I am working on getting one written as I've answered this question a fair number of times internally.
I got a private follow-up note explaining to me why a person might want to do this. It went something like this. My de-duping VTL doesn't know know how to de-dupe an MPX image, therefore I want to stop MPX'ing. In order to still perform my backups in a reasonable amount of time, I need 180+ drives. Is that the situation you are facing? -- tim burlowski Product Manager Symantec 2009/6/9 smpt <sm...@peppas.gr> > Ware is this written? > > Can you point me to this manual/page? > > > > > ------------------------------ > > *From:* veritas-bu-boun...@mailman.eng.auburn.edu [mailto: > veritas-bu-boun...@mailman.eng.auburn.edu] *On Behalf Of *tim burlowski > *Sent:* Friday, June 05, 2009 3:52 PM > *To:* Wyder Peter > *Cc:* veritas-bu@mailman.eng.auburn.edu > *Subject:* Re: [Veritas-bu] Only 128 drives allowed on Linux?!? > > > > I am not sure about the license side of the equation, but 128 drives is the > limit. > > > > Are you able to keep 128 drives, virtual or otherwise, streaming data at a > reasonable rate on this linux server? > > > -- > tim burlowski > Product Manager > > Symantec > > On Wed, Jun 3, 2009 at 9:40 AM, Wyder Peter <peter.wy...@telekurs.com> > wrote: > > Hello everyone > > > > Today I encountered quite a strange behavior in NetBackup (6.5.3.1). For a > couple of months we now use SLES10 linux server as media servers in our > company and recently we also bought a couple of VTLs. When I started testing > the VTLs with our linux machines I quickly got to understand that linux (out > of the box SLES10SP2) has a limit of tape devices of 128. But since we would > like to use more than that on our media server (the VTLs can offer up to 240 > drives per partition) we let our linux engineering guys modify the kernel > settings so that we can generate up to 1024 tape devices on the servers. > > Now, everything went fine and I got 200 tape devices on my linux server > (100 drives from 2 different VTLs). But now NetBackup seems to have a > problem with it: Every time I start NBU the entire media management demons > stop working after a couple of seconds and the only one that stays running > is ‘vmd’. After hours of googleing, searching through the logfiles I finally > saw the following line in ‘/var/log/messages’ when I ran ‘ltid’ with the > ‘-v’-option: > > > > ltid[4709]: The currently licensed version allows up to 128 drives per > server. You have configured 200 drives. > > > > What exactly does it mean? What license? Is there a license for this at all > or is it just Symantec’s way of telling me that I should not tamper with the > standard linux kernels? > > > > Anyone got an idea how to get rid of this limitation? > > > > Any help appreciated! > > > > > > Cheers > > Peter > > > > > > > > *Peter Wyder* > > > > *SIX Group Services AG* > > Systems Engineer Storage > > > > Hardturmstrasse 201 / Postfach 1521 > > Backup Team (IPCB) > > > > 8021 Zürich / Schweiz > > Tel.: +41 44 279 4752 > > > > www.telekurs.com* * > > *peter.wy...@six-group.com* > > > > *www.six-group.com* > > > > > > > > > > > _______________________________________________ > Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu > > >
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