I have a problem with Library because drive have path ok but library's status is unknown, and I can't redefine path or delete drive.

Nombre de biblioteca Nombre de unidad Tipo de dispositivo Activado

IBM3573 DRIVE_1 LTO Sí
IBM3573 DRIVE_2 LTO Sí
IBM3573 TSM_SERVER1 UNKNOWN Sí

Thank you very much for your answers,

Regards.