Most of the statistics displayed are self-explanatory, but note the following:
Number of Contacts is the total number of contact records in the database.
ContactAttributes usage ratio lists the total number of contact attributes of each type in the database. Some of these numbers may be larger than Number of Contacts because a contact may have more than one attribute of certain types: the e-mail address attribute is a common example.
In Number of Interactions per type and Number of Interactions per subtype, type and subtype can be anything defined in the Configuration Server database as Business Attributes > Interaction Type or Interaction Subtype objects. The default objects that are created when you install Configuration Server are:
Type: Inbound, Internal, Outbound
Subtype: InboundCollaborationReply, InboundCustomerReply, InboundNDR, InboundNew, InternalCollaborationInvite, InternalCollaborationReply, OutboundAcknowledgement, OutboundAutoResponse, OutboundCollaborationInvite, OutboundNew, OutboundRedirect, OutboundReply
Number of Interactions for each state has the following possible values:
0 = New
1 = Pending
2 = In progress
3 = Stopped