Tim,

It seems to me that you could create a new label for the Lto 4 and link those 
labels to the tape units / pool
 
For the old pool you can just add the LTO 4 tapedrives

So both can be used as you ask

Only small problem could be that a backup to the older worms could end up in 
the lto 4 drives so blocking a symultanus running Lto 4
Met vriendelijke groet / Kind Regards

Frank Terveen
Senior Systems administrator / Senior Storage Administrator

----- Original Message -----
From: Tim Kimball [mailto:Tim.Kimball AT SUNGARD DOT COM]
Sent: Tuesday, August 16, 2011 08:45 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
Subject: [Networker] Current state of mixed media in library?

I have an SL-48 with two LTO-3 drives that we're looking to move more backups 
onto.  They currently are used with LTO-3 WORM media.

Since LTO-3 was EOL'd, we'll be adding two more LTO-4.

I would like to use LTO-4 tapes for the new backup but am worried that the 
LTO-4 tapes will end up mounted in the LTO-3 drives.  I don't care if the WORM 
tapes get mounted in LTO-4 drives.

Does anyone have a setup like this, and if so how would you set this up?  The 
last time I had to 'mix media' in one library we had to use AlphaStor; It's 
important we don't have to go that route again.

We are currently on 7.4.4 but do have plans on 7.6.x before this upgrade 
(delayed as we'd need to move off of Sun EBS to normal EMC Networker).

Thanks,
--TSK

=====
Tim Kimball
http://sungak.net
=====

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