Per a recent change in the way resource space is managed, the variable used to configure the Master Server resource repository size has changed in name and function. Therefore, the default configuration files need to be changed.
The new variable, rsrc.minMSRepoVolFreeSpace, specifies the minimum number of bytes of disk space that should remain available before further resource check ins are rejected. If a value is not given to rsrc.minMSRepoVolFreeSpace, the Master Server can use as much disk space as needed, up to the entire disk.
Workaround: On Windows Master Servers, manually delete configuration variable rsrc.maxMSRepoSize and add the new configuration variable rsrc.minMSRepoVolFreeSpace. Both variables pertain to the management of resource disk space on the Master Server.