Duplicate Tapes with tapecopy
The tapecopy utility allows you to duplicate tapes in 2 tape drives. The tape in the first listed drive is read and its contents are written in the same format to the tape in the second drive. The two drives do not need to be the same type, only the tape in the second drive must hold all of the contents of the tape in the first drive.
To copy the tape in the first drive (ntape0) to the second drive (ntape1):
tapecopy –i ntape0 –o ntape1
Once the copy begins, tapecopy will examine the original tape for multiple data sets. It will then copy all recognized data sets (data sets are separated by filemarks) to the new tape as shown below.