How to verify Tape Library Summary (Tabular summary report showing tape library slot and capacity)

Hello everyone,

I've just generated a report on OPS: Report templates -> Disk & Tape Device Activity Reports -> Tape Library Summary and I need to understand how the capacity columns are calculated (Available Capacity (GB) - Used Capacity(GB) - Total Capacity(GB)).

The analyzed libraries are SL3000 with both LTO4 and T10000 tapes. I tried to perform a rough calculation but I don't understand it the values on the report take into count the maximum capacity (compressed) of the tapes currently loaded in the slot and in the drives or if it uses another way.

Do you have any idea about it please?

Thank you