1. A method for testing a process node within a plurality of process nodes, the method comprising the steps of: connecting a job manager and a mirror node to the plurality of process nodes, where the mirror node is known to operate as desired, under control of the job manager, transmitting a common data portion over a first network to both the mirror node and a selected one of the plurality of process nodes, where the first network connects directly to the mirror node and the process nodes, but does not connect to the job manager, transmitting data processing instructions over a second network from the job manager to both the mirror node and the selected process node, where the second network connects directly to the job manager, the mirror node, and the process nodes, and the first network is separate from the second network, performing the data processing instructions on the common data portion with both the selected process node and the mirror node, thereby respectively creating a process report and a mirror report, transmitting the process report and the mirror report over the second network to the job manager, comparing the process report to the mirror report with the job manager to determine differences, comparing the differences to a standard, and repeating the method with a different selected one of the plurality of process nodes.