The server disk usage tab generates a graph for each disk unit managed by the server and an overall graph (Total):
•The dark blue color in the graph represents the percentage of recorded data.
•The yellow color represents the percentage of free disk space allocated for recording.
•The orange color represents the percentage of space used by other files not related to image recording.
•The light blue color represents the percentage of disk space not allocated for recordings by the system. This space can be changed, see the chapter: General Settings.
In the example above, the first graph is the sum of the other two units used by the system (Unit D and Unit E);