In the vsphere content pack, there is a pane under vcenter server overview where it Counts "vcenter servers integrated". This Count is very wrong, as it Counts occurences of the Word vcenter-server (despite showing it should Count Sources) instead of unique hostnames. In my installation it therefore shows 71 vcenters, instead of the 4 it should be. The reason is that the loginsight also receives logs regarding DRS rules, and this matches the filter. By changing to unique hostnames instead of Sources, it Counts correctly.