Just for information,  no need to download zlib as the CSP gateway installs it. This issue was down to a  dependency issue on windows 2012 as a result I had to install "MS VC++ 2013 redistributable". Thanks to Bernd Mueller as Intersystems wrc.


I currently use nagios/omd to monitor cache/ensemble, for disk space monitoring I use a COS routine that uses the SYS.Database:FreeSpace method.