>My Problem is, that one of our tapes in the library is destroyed.
>I thought, no problem we have a outside copy pool...
>
>restore volume A00xxx preview=yes
>shows me about 105 tapes

Dietmar - The degree of "destroyed" may mitigate your effort.
          A leader block snapped off a 3590, for example, can be
reattached and the tape saved.  (I've done a couple.)  If the
tape simply has "bad spots", by all means consider doing a Move Data
to get most of the data from that single tape and greatly reduce the
need for additional tape mounts.