About getServerProperties, it is a new task in 10.x.
It is used to return the server properties associated for a given Intelligence Server, per below documentation:
https://www2.microstrategy.com/producthelp/Current/WebAPIReference/com/microstrategy/web/app/tasks/GetServerPropertiesTask.html
In details, below is currently what can be fetched by this task:
If serverOptions is not specified, it would get 200 if the given Intelligence server is running.
Sample result:
<taskResponse statusCode="200">{}</taskResponse>
<taskResponse statusCode="200">
{"vr":"10400","ocv":10000}
</taskResponse>