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The Forecasting Shell Server (FSS) is the server for execution of forecast runs and import tasks. It contains the modelling software. It's operation is controlled by the Master Controller. The results of the forecast models are typically stored as TimeSeries in the central database and optionally exported later to the Deltares Open Archive. 

Hardware requirements

• minimum 2 GB RAM
• one CPU core per FSS instance. When available, a FSS will use more than one CPU. This might be an issue when you have multiple FSS on a single machine. You can use a VM or container that limits the CPU usage of a FSS to a single core.
• CPU typically Intel Xeon 2.33 GHz or equivalent
• recommended minimum 2 of Forecasting Shell Servers, add more depending on computational load

Operating System requirements

• Windows and linux forecasting shells can be used simultaneously
• OS usually depend on 3rd party modules and modelling software
• Operating System requirements - 2020.02 and later

Software requirements

• Forecast modelling software often require licenses.