On Windows and Linux, this value is stored in a property file called
CLCGenomicsServer.vmoptions) which contains a text like this:
-Xmx8192mThe number (8192) is the amount of memory in megabytes the CLC Server is allowed to use. This file is located in the installation folder of the CLC Server software.
By default, the value is set to 50% of the available RAM on the system you have installed the software on.
You can manually change the number contained in the relevant line of the vmoptions file for your CLC Server if you wish to raise or lower the amount of RAM allocated to the Java Virtual Machine.