To get information about your archive (statistics), use File|Information menu item. The window will appear:
You can see the total number of disks of each type in your database, as well as total, used and free space on your disks (summarised), and the number of files and folders listed in the database.
If you need detailed information about each disk in the database, press More button:
Here is the disk name, serial number, disk size, used and free space on the disk, and the number of files and folders on the disk. The Save button here allows you to save this information as a report to the text file.