The repository database is a database that is created in the source Adaptive Server during the setup phase of the migration process. The list of migration tasks, progress, and other control information is stored in tables created in this database. The name of the repository database is defined (and fixed) to be sybmigratedb.
The tool writes setup, status and progress information to the databases in order to know where in the migration process you are. This database does not need to be large - typically only a few megabytes. The size of the database depends on the number of databases selected for migration and the number of objects in the database. The migration tool will provide a realistic default for the size of this database. Once the database has been created, subsequent passes through the setup phase will increase the size of (i.e. extend) the database.
The Logical Device field asks you to select the logical device from the drop-down menu. The logical device is used to create and to alter the repository database. Select a device with ample space for the anticipated size of your repository database.
The migration tool will attempt to confirm that enough free space is
available on the devices for the work and repository database configurations
you have defined. If not enough space is found on those devices the
tool will not progress to the next phase until you have either rectified
the space problem or chosen different devices.