Our ADSM system on the AS/400 seems to be going through some major problems. 
Every tape it uses in the 3570-B12 returns the following messages:

Message ID . . . . . . :   ANR7945       Severity . . . . . . . :   00       
Message type . . . . . :   Information                                       
Date sent  . . . . . . :   08/15/98      Time sent  . . . . . . :   06:45:48 
                                                                             
Message . . . . :   ANR7808W OPEN TAPE GPU013 returned exception CPF4108.    
This is a message from the ADSM console output.  It was sent to the message  
  queue specified in the CONSMSGQ option of the ADSM options file.           

and

 Message ID . . . . . . :   ANR7945       Severity . . . . . . . :   00       
 Message type . . . . . :   Information                                       
 Date sent  . . . . . . :   08/15/98      Time sent  . . . . . . :   06:45:49 
                                                                              
 Message . . . . :   ANR8359E Media fault detected on 3570 volume GPU013 in   
   drive TAPLIB02                                                             
 This is a message from the ADSM console output.  It was sent to the message  
   queue specified in the CONSMSGQ option of the ADSM options file.           
                                                                              

If I run an audit on the tape, everything reports back that it is OK. ADSM has 
been running fine for several months. Is this an ADSM problem or tape drive 
problem?

Thanks for your help,

Don Burdette