A 3494 Tape Library has some single points of failure. Many of them, but not all, can be removed by installing availability options like the high availability option (HA1), a second accessor and dual grippers. A failure of a 3494 Tape Library impacts both Peer-to-Peer VTSs. Mixed configuration In Figure A-12, a Peer-to-Peer VTS, a stand-alone Model Bxx VTS, and native drives share two 3494 tape libraries at a single location. VTC VTC VTS 3494 VTS VTC S/390 server axo S/390 server VTS 3494 Figure A-12 Mixed configuration at a single location Availability targets The availability targets are as follows: The data availability targets for Peer-to-Peer VTS are the same as in the previous configuration. The data availability targets for the stand-alone Model Bxx VTS and for the native drives