When you have a very heavy load of files to be analyzed for malicious content, you can cluster two or more Intelligent Sandbox Appliances. So, the analysis load is efficiently balanced between the Intelligent Sandbox Appliances (nodes) in the cluster.
Consider multiple inline Sensors submitting hundreds of files per second to one Intelligent Sandbox Appliance. In the blocking mode, a Sensor waits for up to 6 seconds for Intelligent Sandbox to analyze a file. After this time period, the Sensor forwards the file to the target endpoint. Faster response from Intelligent Sandbox could be accomplished by clustering Intelligent Sandbox Appliances for load-balancing.