There are a lot of factors that can affect how tapes are filled, and the
 amount of data stored on a tape. Having a MAXCAP of 800MB means ADSM will
 stop filling the tape when it has written 800MB to the tape, or when it
 reaches physical end of volume, whichever comes first.  The 800MB figure
 does not take hardware compression into consideration, if the data is being
 compressed, there will actually be less on the tape.
 How much data do the tapes show they hold in ADSM, and is the status of the
 tapes full?  For full tapes, the Estimated Capacity is the amount of data
 ADSM wrote to the tape.  The %used is how much of that data is still
 valid (not expired). If the tapes are not going to full status, then there
 are other things to look at - like is colocation on?  .
  Carol Trible
   ADSM Development

>>   Situation:
>>
>>  We currently operate MVS 5.1.0 and TMS 5.1. The ADSM product archives it
>>  =91s data received from the clients to MVS/TMS managed tape.  All MVS tap
>>  e
>>  transports writing the ADSM Client data are IDRC/36TRK devices. This
>>  would indicate that any 3490E tape could hold up to 800MB per tape.
>>  In the DEVCLASS for ADSM, the MAXCAP parameter is set to 800MB.
>>
>>  Question:
>>
>>  From the TMS side, we are not seeing any more than 600MB written to any
>>  (1) tape volume. When we do a query on the volume from ADSM it say=92s th
>>  e
>>  volume is only 80% full. How do we force ADSM to write 800MB on a single
>>  tape?
>>
>>  --=20
>>  Jane Walker
>>     205 E. 2nd S. Rm 203     Fax  : (801) 237-3099
>>     Salt Lake City, UT 84111 Pager: (801) 480-0175
>>     Phone:  (801) 237-5532   MailTo: jawalke AT netmail2.mnet.uswest DOT com