SwoClientEndPointGroup Vs ServerEndPointGroup

An EndpointGroup represents a collection of endpoints that are managed as a unit. By grouping together a collection of Endpoints, the EndpointGroup allows a collection of entities from differing sources or hosts to be manipulated uniformly and efficiently.

For any given EndpointGroup, all of its endpoints act exclusively as either server endpoints or client endpoints, as indicated by the value of the EndpointType property. Similarly, each Endpoint within a group has the same AccessState.

A server or client may define multiple EndpointGroup entities that access the same set of resources or functionality. A group may be designated as preferred, which signifies that access should be directed through its members in preference to the Endpoints listed in other EndpointGroups.
If the value of EndpointType is Server, an EndpointGroup entity can be used to represent target port group as defined by SCSI. In that mode, the value of the TargetEndpointGroupIdentifier should correspond to the target port group number. (See clause "Device Identification VPD page" as defined in the SCSI Primary Commands specification.)