The following diagram show a basic overview of the servers used in the DRP and S3DF. The drp-srcf nodes are used for the DRP, interactive nodes (psffb) and data mover (DSS to FFB migrration).
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Each of the 16 FFB server (drp-srcf-effbNNN) each has a 100Gb ethernet adapter which is connected to the S3DF network which allows mounting the FFB on the S3DF interactive, batch and transfer nodes.