did you define the 8mm drive as a manual library ? ? ?
tsm: TTCSTG02>q library

    Library Name: MANULIBR
    Library Type: MANUAL
          Device:
Private Category:
Scratch Category:
External Manager:
          Shared: No



tsm: TTCSTG02>q drive f=d

                                Library Name: MANULIBR
                                  Drive Name: MANUDR00
                                 Device Type: 8MM
                                      Device: /dev/mt0
                                     ON LINE: Yes
                                 ACS DriveId:
                                Allocated to:
              Last Update by (administrator): ZDEC23
                       Last Update Date/Time: 01/15/98   10:22:23
Cleaning Frequency (Gigabytes/ASNEEDED/NONE): NONE


and make sure mt0 is available and not rmt0...

Dwight

> ----------
> From:         Jim Coen[SMTP:coen AT WASHBURN DOT EDU]
> Reply To:     ADSM: Dist Stor Manager
> Sent:         Friday, March 24, 2000 11:04 AM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Backing up DB
>
>     Hello,
>
>     We are running ADSM 3.1.2.1 on AIX 4.2.1, and have a MagStar 3570
>     (20 carts). In an effort to avoid using one of the cart bays for
>     DB backup, we hung an 8mm tape drive on the scsi chain and
>     configured it the way that *seemed* correct.
>
>     However, when I attempt a backup of the database I receive the
>     following error message: "ANR4571E Database backup/restore
>     terminated - insufficient number of mount points available for
>     removable media."
>
>     This error message persists no matter what value I assign to
>     the number of mount points allowed (DRIVES, 0, 1--100).
>
>     Anyone seen this, and have a suggestion?
>
>     Thanks ahead of time.
>
>     Jim
>
>     Jim Coen
>     Washburn University
>     Topeka, KS
>