Donna PageHSD Meeting

23 February 2010

HistoryAHPS Web Pages – Phase V implemented June 2007Hydrology 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 2007The hardware was delivered in March/April 2007

Summary of Phase VI FeaturesMigration 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

Key BenefitsRedundancy, load balancing – entire nation can be served by

one, two or three farmsMore frequent hydrograph updatesRealize enhancements for our customersWorks around existing SRH-HQ comms issueBegin addressing requirements backlog – “Phase VII” and

beyondCIF soon to be a Certified and Accredited systemLower contractor costs for support and future developmentImplementation of NetCache servers will decrease load on DB

and backend servers, improve download time for users

Key RisksNew data pathways and new software

Extensive testing requiredLess 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 hydrographOriginal plan – database synchronization – infeasible with MySQLSecondary plan – create all images from one farm and rsync – infeasible

due to bandwidth limitationsCurrent plan – create images at each farm and monitor

Intangibles / Other IssuesCIF 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 mitigateDecision to Launch – based on Go-No Go ChecklistSpring Floods deadline - benefits vs. risksOther Phase VI preparations – PNS, Training, HydroGen Cron Coordination,

Lat-Lon and Flood Stage DiscrepanciesCurrent momentum between OHD and OCIOQuickly using up AHPS FY10 funds for support & development

Memorandum of AgreementDefines the responsibilities of each party in support of the

AHPS information dissemination. (OCIO, OCWWS, OOS, OHD)Support Structure defined

Tier 1 – TOCTier 2, 3 – CIF, WHFS Support, OHD Support ContractorTier 2 only - RegionTier 3 only – NCF

Tracking of issues through TOC ticket system, othersService Level Agreements for response and notification times.

Responses based on Emergency, High, Medium, Low impact designation.

Current StatusCIF

CR and HQ farms - generating full AHPS web pages on test siteSR – 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 precipTraining 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 deploymentChange WFO HydroGen crons

Go/No Go Checklist (part 1)

System is ReadyCIF is ready to operate AHPS. CIF Manager

AHPS development is complete. Orion

Testing shows data flow works and performance is within accepted performance thresholds.

AHPS Web Team

Support is ReadyTOC is ready to assume Phase VI support responsibilities. TOC Manager

CIF is ready to assume Phase VI support responsibilities. CIF CCB Manager

OCWWS / HSD is ready to assume Phase VI support responsibilities. OCWWS / HSD

Orion is ready to assume Phase VI support responsibilities. Orion

Go/No Go Checklist (part 2)

Region Data Calls are CompleteHydroGen crons are coordinated; flood stage and lat/lon discrepancies in the CMS are acceptably low.

Alaska Region

HydroGen crons are coordinated; flood stage and lat/lon discrepancies are acceptably low.

Central Region

HydroGen crons are coordinated; flood stage and lat/lon discrepancies are acceptably low.

Eastern Region

HydroGen crons are coordinated; flood stage and lat/lon discrepancies are acceptably low.

Southern Region

HydroGen crons are coordinated; flood stage and lat/lon discrepancies are acceptably low.

Western Region

The Timing is AcceptableIs not a CIF Critical Weather Day, and no other critical upgrades are planned

CIF CCB Manager

Current hydrologic situation is conducive to transition to Phase VI AHPS Web Team

Approval to Deploy Phase VIOCWWS supports and approves deployment of AHPS Phase VI. OCWWS

Director

OHD supports and approves deployment of AHPS Phase VI. OHD Director