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AHPS Phase VI Web Pages

AHPS Phase VI Web Pages. Donna Page HSD Meeting 23 February 2010. History. AHPS Web Pages – Phase V implemented June 2007 Hydrology Program decided to make investment in the Consolidated Internet Farm (CIF) to accelerate the inclusion of the AHPS Web Pages into the CIF in Dec. 2006

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AHPS Phase VI Web Pages

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  1. AHPS Phase VI Web Pages Donna Page HSD Meeting 23 February 2010

  2. History • AHPS Web Pages – Phase V implemented June 2007 • Hydrology Program decided to make investment in the Consolidated Internet Farm (CIF) to accelerate the inclusion of the AHPS Web Pages into the CIF in Dec. 2006 • Work began on Phase VI software in Q2 2007 • The hardware was delivered in March/April 2007

  3. Summary of Phase VI Features • Migration from region-based web farms to NWS Consolidated Internet Farm (CIF) • Use of new data pathways, including National River Location Database (NRLDB) • Updated hydrograph image generation program (database driven) • Transparent to users - with a few enhancements • Precip Page modifications • Pacific NW Service Assessment item (multiple data sources at a site) • Product segmentation issue (associate proper product with location) • Use of Google Maps for gauge site location map • TARGET DATE – Mid-March • Spring Flooding (Iowa, Red River, West) will begin in March

  4. Key Benefits • Redundancy, load balancing – entire nation can be served by one, two or three farms • More frequent hydrograph updates • Realize enhancements for our customers • Works around existing SRH-HQ comms issue • Begin addressing requirements backlog – “Phase VII” and beyond • CIF soon to be a Certified and Accredited system • Lower contractor costs for support and future development • Implementation of NetCache servers will decrease load on DB and backend servers, improve download time for users

  5. Key Risks • New data pathways and new software • Extensive testing required • Less than preferred time (or dollars) available • Exposure to CIF outages – database, filers, network, etc. • Gain CIF support • How will the performance change when the CIF is under heavy loads? • New, untested 3-tier support paradigm: TOC (Tier 1), CIF – OCWWS/HSD – AHPS Contractor (Tiers 2 and 3) • Potential for multiple versions of a hydrograph • Original plan – database synchronization – infeasible with MySQL • Secondary plan – create all images from one farm and rsync – infeasible due to bandwidth limitations • Current plan – create images at each farm and monitor

  6. Intangibles / Other Issues • CIF Issues • Bandwidth is filling up • Can we “reserve” future bandwidth to implement “secondary plan” of rsyncing images? • Will CIF be more stable than region farms? Will Phase VI overwhelm the CIF? Will bandwidth issues improve when we deploy Phase VI and stop rsyncing large HydroGen HML files? • Governance model under development/review • No decision on who will pay for hardware refresh and CIF enhancements, CIF O&M costs, etc. • Less work (NRLDB) for HPM’s … or more questions? Training to mitigate • Decision to Launch – based on Go-No Go Checklist • Spring Floods deadline - benefits vs. risks • Other Phase VI preparations – PNS, Training, HydroGen Cron Coordination, Lat-Lon and Flood Stage Discrepancies • Current momentum between OHD and OCIO • Quickly using up AHPS FY10 funds for support & development

  7. Memorandum of Agreement • Defines the responsibilities of each party in support of the AHPS information dissemination. (OCIO, OCWWS, OOS, OHD) • Support Structure defined • Tier 1 – TOC • Tier 2, 3 – CIF, WHFS Support, OHD Support Contractor • Tier 2 only - Region • Tier 3 only – NCF • Tracking of issues through TOC ticket system, others • Service Level Agreements for response and notification times. • Responses based on Emergency, High, Medium, Low impact designation.

  8. Current Status • CIF • CR and HQ farms - generating full AHPS web pages on test site • SR – delay because of N-CIRT issue and risk to AHPS precip pages. Will come on line shortly after deployment. • To be done • Setup of ldm feeds of RFC probabilistic graphics and precip • Training for TOC and WHFS Support (Feb. 25-26) • Training for WFOs (Regional reps: 3 sessions to be scheduled) • Test of rehost of AHPS Web on 3rd party web (this week) • Send out PNS for new URLs • Post deployment • Change WFO HydroGen crons

  9. Go/No Go Checklist (part 1)

  10. Go/No Go Checklist (part 2)

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