This is not a strange situation at all.  I dealt with the same issue
during our DR test last year.  Here's the steps I took:

1. Before you can restore the TSM database you'll need to update the
   device configuration file (pointed to by the DEVCONFIG statement
   in the dsmserv.opt file).  Look for the "DEFINE LIBRARY" statement
   for the 3494 and change it to read:
     DEFINE LIBRARY libname TYPE=MANUAL

   Save the file and restore the TSM database.

   Manual 3590 drives each have an LCD which displays the volser of the
   tape to mounted on that drive so you'll know which tape to mount on
   which drive.  As I recall, you'll also see a mount message on the TSM
   console.

2. After the TSM database is restored you need to remember that the
   library and drive definitions are kept there and they still reflect
   the 3494 library you have at home.  These need to be changed, too.

   Start the TSM server and bring up an admin session (dsmadmc) and
   issue these commands:

     DEL DRIVE 3494lib drivename   <- do this for all 4 tape drives
     DEF LIBR 3590LIB TYPE=MANUAL
     DEF DRIVE 3590LIB drivename DEVICE=devicename      <- do all 4 drives
     UPD DEVCLASS classname LIBR=3590LIB MOUNTL=4  <- do this for each
                                              devclass which used
                                              the 3494 library

After doing these steps I was able to restore files to a NetWare server.

Here's the URL of a page at adsm.org which talks about the same thing
(which
is how I found out about this)
     http://msgs.adsm.org/cgi-bin/get/adsm0002/343.html

Let me know if you need any further info.

Jeff Renicker


----- Forwarded by Jeffrey Renicker/Akron/IBM on 07/12/01 03:24 PM -----
                    "Braich,
                    "Braich,
                    Raminder"               To:     ADSM-L AT VM.MARIST DOT EDU
                    <raminder.braich@       cc:
                    DAVEY.COM>              Subject:     Peculiar disaster 
recovery situation
                    Sent by: "ADSM:
                    Dist Stor
                    Manager"
                    <[email protected]
                    .EDU>


                    07/11/01 11:29 AM
                    Please respond to
                    "ADSM: Dist Stor
                    Manager"





>Hi,
>   We have a 3494 tape library with 4 3590 tape drives and a robot. We are
>considering an offsite disaster recovery solution. Meaning if the present
>building is destroyed we go to another location and restore everything.
>However at this "other location" we donot have 3494 tape library. We would
>have access to only 3590 tape drives. My question is how would the tapes
be
>loaded to tape drives manually. In other words would the drives recognize
>the tapes(created in 3494 library) or do I need to change something in our
>present configuration.
>
>Thanks
>Raminder Braich