Cache for Windows is supported as a server platform and Cache for MacOS is only supported as a development platform?

https://docs.intersystems.com/latest/csp/docbook/Doc.View.cls?KEY=ISP_te...

uname -n is generally documented as returning a network host name but systems can be configured with multiple networks and it is not defined exactly what uname -n means at that point. 

The methods above, the $SYSTEM variable,  ##class(%SYS.System).GetNodeName(1) and  $System.INetInfo.LocalHostName() all return the network host name which will match uname -n if there is only one network host name on the system. $SYSTEM.InetInfo has additional methods which can be used if there is more than one host name associated with a given system.

Note that the $SYSTEM variable is loaded at system startup and can be overridden with a fixed name as part of the Cache' configuration so on some systems it may differ than what the other methods will return.