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National Weather Service Telecommunication Gateway Legacy Systems Replacement

National Weather Service Telecommunication Gateway Legacy Systems Replacement. WMO – ISS September 2002. Increasing Traffic Volumes. NWP Improvements NEXRAD Base Data ORPG/ORDA. NCEP currently produces more than 175 GB/day but is able to send less than 50 to the NWSTG.

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National Weather Service Telecommunication Gateway Legacy Systems Replacement

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  1. National Weather ServiceTelecommunication GatewayLegacy Systems Replacement WMO – ISS September 2002

  2. Increasing Traffic Volumes • NWP Improvements • NEXRAD • Base Data • ORPG/ORDA NCEP currently produces more than 175 GB/day but is able to send less than 50 to the NWSTG

  3. Current Architecture Mainframes IBM VM/ESA Operating System Message Switch Application, custom database Specialized Front End Processors (Amdahl and Concurrent) New Architecture Enterprise Servers UNIX COTS Messaging and Queuing middleware, COTS RDBMS, and C Language applications General purpose servers Architecture Changes

  4. Expected Outcomes • Meet NWSTG delivery performance requirements • 10 second Message Switch transit for Watches and Warnings • Accommodate traffic increases, user increases, and protocol changes without major disruptions • New technology (MQSeries) handles 90 million messages daily averaging 4 seconds transit in U.S. Customs system • Retain current reliability and maintainability of facility and IT systems at 99.9% availability • Reduce dependency on unique skills, software, and systems

  5. NWSTG Data Flow Diagram

  6. NWSTG Data Flow Highlights • Data enters through Communication front ends and is placed on Messaging and Queuing (MQ) middleware for movement to Switch Engine • Switch Engine: • Uses Switching Directory to determine distribution • Places message in Sybase RDBMS • MQ Series Integrator (MQSI) and applications: • Parse messages and data elements • Perform QC • Build new messages and bulletins • Data is delivered to users through communication links and servers

  7. Switching System ReplacementData Flow

  8. NWS Web & FTP Services Pacific Region Alaska Eastern Region Severe Storm Center Central Region Western Region Headquarter Aviation Wx Center Southern Region Hurricane Center

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