> > We are in the process of purchasing ADSM.  Our server
> > will be MVS.  We have installed and tested it out, and
> > now it is time to sign on the line and start paying our bill to
> > IBM.  My question is: What does Device Support Module
> > 4 do for me?  The document on ADSM indicates that
> > DSM4 is needed to "support" our STK 9310
> > (Powderhorn) library ... but... I don't  believe that ADSM
> > can tell if tapes are being accessed in the 9310 or just on
> > our standalone drives.  Even if ADSM can determine
> > 9310 usage, what additional function/service do I get for
> > the rather large (more than double) cost increase of
> > DSM4?  We have been running the trial with DSM3 and
> > DSM4 disabled and everything seems to be running fine.
>
> We run an MVS 5.1.0 system with an STK Powderhorn with 4490 drives and
> run ADSM 2.1.0.9 with DSM 2 without any problems. As far as MVS and ADSM
> are concerned the drives are manually operated. The 'library' support in
> DSM 3/4 must refer to IBM tape libraries, where the control software is
> integrated into MVS and SMS, and ADSM knows how to interact with it.
>
We have a similar situation with a GRAU library ABBAJ with two 3590 whitch is 
not driven by adsm but with a catching message method and it works fine with 
DSM2 module.


Eric Boyer <eric.boyer AT cnusc DOT fr>
        tel   : 33 67 14 14 14
        fax   : 33 67 52 37 63