This is more difficult than that I think because you said "multiple files" and 
I say "multiple tapes". You have full and inc backup. You must find how many 
savesets have the files you want to destroy, which tapes these savesets are, 
recover all the versions of the other files (just in case someone would want to 
recover THIS particular version of a file and no other one) than rewrite all 
the tapes. And don't forget to do all the management from the Networker console 
to confirm the deletion of the savesets on the tapes.
 
Kind regards
 
> Date: Wed, 23 Feb 2011 10:08:30 -0500
> From: networker-forum AT BACKUPCENTRAL DOT COM
> Subject: [Networker] to delete a single folder or file from Tape
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> 
> All you can do is delete a reference to this file from online media database. 
> You can't delete a single file from the tape itself. If you absolutely must 
> do it - I would suggest to clone the entire tape to another one with the 
> exception of that file, and then wiping the original tape.
> 
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