Your system drive (C:\) is filling up from job information and catalog files because Genie Backup Manager (GBM) stores this information in the Application Data (%AppData%) folder on the default system drive (C:\) even if you chose to install the software on the secondary drive.
To prevent the running out of space on your system drive, you have a couple of options:
1. Enable the Purge option: Every time an old backup set is deleted, it will also delete the catalog information (i.e. the 8-digit files) corresponding to that run from the default location under the Application Data (%AppData%) folder. For more information on purging, please click here.
2. Change the destination of GBM cataloging from its default location on the C:\ drive to a different drive: This is done by creating a junction point to the second drive. For information on how to do this, please click here.
3. Disable Cataloging: This will prevent GBM from adding any more of the 8-digit catalog folders on the Application Data (%AppData%) folder on the default system drive (C:\); however, you will no longer be able to view the Catalog information about the backup runs via the Catalog option on the main window of the GBM software. To disable catalog, please:
Open your GBM software → Tools → Global Preferences… → From Category, select Cataloging → Uncheck the Enable Cataloging option → OK.
If you wish to empty space on your system drive, you can manually delete the old 8-digit catalog folders on the Application Data (%AppData%) folder.