Hi list

We have an installed TSM Storage Manager Server on a z/OS Mainframe. 

We have defined a Tape Pool with a maximum of 200 Tapes which can be
taken from a scratch pool. If TSM takes a Scratch tape it is
automatically put on RMM as the owner "ADSM".

The problem is that these tapes if they are empty they never are beeing
returned to the scratch pool.

What must be done on TSM Server that it empties the tapes? TSM has 124
tapes used in the defined TSM tape pool.

However in RMM there are 277 tapes defined as master for TSM. 

1) What must be done that the tapes which are not anymore in the TSM
tape Pool but still are in RMM that they are returned to the scratch
pool?

2) In the integrated solutions console under "Servers" -> "Libraries for
All Servers" -> "Device Classes for ADSM" -> "TAPEPOOL Properties
(ADSM)" there are the options 

- "File retention period" 
  Is it from the creation date or from the date the tape was empty? 

- "Tape expiration date (yyyyddd)"
  What is the meaning of these 2 parameters?

Thanks for any help
Regards
Werner Nussbaumer