>i'm  getting error while defining the Magstart tape
>3570 library it has 2 drive.
>
>(i removed the Exabyte library and i try configuriing
>Magstar 3570 library.(  pretty old setup.))
>
> i can able to define drives individually, it shows
>element number 16 and 17. when i try to define the
>second drive it saying error ur drive or element
>conflicts with existing drive.
>
>this is wht i done
>
>define library ABLKLIB libtype=scsi
>device=/dev/rmt1.smc
>
>define drive ABLKLIB tape0 device=/dev/rmt0 element=16
>
>when i defining the next one
>it gives error
>
>define drive ABLKLIB tape1 device=/dev/rmt1 element=17
>
>ANR8419E DEFINE DRIVE: the drive or element conflict
>with existing drive in library.

I'm not a 3570 expert, but I believe you have the drives backwards relative to
SMC designation.  You didn't include your operating system type or level or 3570
subtype in your posting, but The IBM TotalStorage Tape Device Drivers
Installation and User's Guide says:
  Base configuration is intended for attachment of one or two drive libraries on
  a single SCSI bus. Control of the library is accomplished by sending Medium
  Changer commands to LUN 1 of drive 1 (the drive on the left as viewed from the
  rear of the library).
The 3570C Hardware Reference manual, "Mapping Element Addresses To Physical
Locations" corroborates that it is Drive 1 (the other drive being designated
Drive 2). The TSM Supported Devices page for 3570 element numbering
(http://www.ibm.com/support/docview.wss?rs=663&uid=swg21053647)
verifies that Drive 1 should be element 16 and Drive 2 element 17.
If queries in your OS verify your quoted rmt_ numbers as belonging to the 3570
(some RS/6000 systems have a built-in tape drive, conventionally rmt0) then I
should think that your rmt0 should be the SMC, not rmt1.  (The "Drive 1"
nomenclature is just relative numbering; don't confuse the number with device
numbering resulting from your operating system's device discovery device
numbering.)

Review the body of documentation on 3570 configuration for TSM, and verify your
host device addresses before proceeding.

   Richard Sims