Taken from the technote DOCUMENTATION: What is the process for decommissioning a NetBackup 6.5 media server?

If both <old_server> and <new_server> are at NetBackup 6.0MP7 or later, or NetBackup 6.5.2 or later, run the following command:

If <old_server> or <new_server> is at a version earlier than NetBackup 6.0MP7, or NetBackup 6.5.2, run the following command for each volume that has active  images as identified in step 1:

 bpmedia -movedb -ev media_ID -oldserver <old_server> -newserver <new_server>

The second command you need to use for 6.5.1

Don't be scared to upgrade! Not only do the updates contain a lot of bug fixes, it also introduce lots of new features!

i will upgrade. but need to get this going first.pleaseeeeeee

As Stuart pointed out - on your version, one-by-one media-id:

bpmedia -movedb -ev media_ID -oldserver <old_server> -newserver <new_server>

Use bpmedialist to obtain list of media-id's belonging to old_server:
bpmedialist -mlist -l -h <media_server_being_decommissioned>

i have 200 media. i  need a command that will pick rthem all together

OK hope you got UNIX as heres the script to do it from the Master Server
Replace <old_server> <new_server> with the respective hostnames in your NetBackup config

for i in `bpmedialist -mlist -l -h <old_server> | awk '{print $1}'`
do
bpmedia  -movedb -ev $i -oldserver <old_server> -newserver <new_server>
echo "Moving MediaID $i"
done

thanks stuart, but i operate windows 2003.  can i get the windows version

Im no programming guru but the quickest way....

Use Excel and grab the output of the command

bpmedialist -mlist -l -h <old_server>

Paste it into EXCEL. Possibly convert text to columns. Anyway the first column should be mediaID's Take the first column value in another cell formula, that uses the string

bpmedia  -movedb -ev <column1> -oldserver <old_server> -newserver <new_server>

NOTE: Follow string convetion usage in EXCEL with & and " to wrap the text. Then just drag this down across all 200 media row entries Copy the output to text file. Save as .bat file and run.