Solution for a data in a damaged Tape

hi friends,

i need your help please, last night we had a problem with a tape and it's become unreadable and we can't use it more... but this tape content very important data, with an important size ( more than 800 GB). i need to know if there is a possibility to get all the backupID on this Media, and how to duplicate just thoese backupID from disks to a new tape.

thanks in advance.

Master server OS : WIndows Server 2008 R2.

Tape is : LTO6.

Netbackup Version : 7.5.0.5