Now, the property is not resolved and the property name remains. Unfortunately this has a detrimental effect upon deployment. Previously a blank , null or space value would be resolved with a blank value.
A running Agent will also require some space for the work that it performs. How much space it requires will depend on the size of the artifacts that are downloaded, as well as the size of logs produced during the installation and the size of any temporary files that the deployment processes require. Many of our customers allocate 1GB for their agent and this will usually work out.