Hi, whilst the barcodes are 8 characters long, NetBackup uses just 6 characters 
as its media ID.  So tape GJW998L4 has a media id of W998L4 and tape LXW998L4 
will also have the media id of W998L4.  When you inventory a robot, via the 
advanced options you can create Media ID generation rules.  You should define 
that barcodes are 8 characters, and that you will use the first 6 characters 
from the left hand side, e.g GJW998L4 would have id GJW998 and LXW998L4 would 
have LXW998 which would be unique.

The problem with implemeting a rule after media has been used if that the media 
id is also written to the tape, if you implement the rule the media id read 
from the library will not match what is on the tape.  So you need to be careful 
just implementing rules on the fly.

There are TECH docs on the Symantec website that detail changing the lable on 
media.

Hope this helps (hope this makes sence).
Cheers James

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