If I remember correctly, you can use the nsrmm command, try the following. It 
has to be done SSID, cannot do the tape itself.

Nsrmm -e browse period -w retention -S SSID. 
------Original Message------
From: Crono617
Sender: EMC NetWorker discussion
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
ReplyTo: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Commands needed to make a set of tapes browse-able again?
Sent: Apr 22, 2010 3:05 PM

Hello All, 

I'm pretty new to Networker and could use some assistance in solving a problem. 

We have a 3 month browse period on our monthly backups. Just recently we have 
been tasked with recovering some data off of a tape from last year. The tape is 
already in the index, I see the volume in the Media section in Networker. I 
would really like to know what the steps are in order to make it browse-able so 
that I can restore data using Networker User. 

Thanks in advance. 

Regards, 

Ed

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