Phil,

I believe that a 3575 is the library robotics for the 3570 drives.

The logical libraries are useful if you have more than one system using
the library. We do this on the 3494 to divide the tapes among the
systems that share the mechanical parts.

Thank You,

Stefan Dusedau
infoWorks
A Viacom technology service
(212)258-6739
stefan.dusedau AT viacom DOT com


                -----Original Message-----
                From:   Monks, Phil [mailto:PMONKS AT LOUKY DOT ORG]
                Sent:   Friday, January 15, 1999 4:13 PM
                To:     ADSM-L AT VM.MARIST DOT EDU
                Subject:        IBM 3575/Logical library question
                Importance:     High

                ADSM'rs

                        I'm running ADSM 3.1.2.1 on AIX 4.2.1, Model
R30/7015. We are switching from IBM 3570 to an IBM3575/L32 (two drives)
tape system with no intention of keeping the 3570.

                        The hardware manual on the 3575 makes mention of
the optional use of logical libraries.  Are there any real
advantages/disadvantages to breaking  up the 320 slots into multiple
logical libraries as opposed to leaving it as one large library, i.e.
physical = logical.

                        P.S.  I make no great claims to having a good
handle on 'logical libraries'.

                        Any light on this subject would be much
appreciated.

                Thanks,

                Phil