Cloud Computing and GIS

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Presentation transcript:

Cloud Computing and GIS IT4GIS Keith T. Weber, GISP GIS Director ISU-GIS Training and Research Center

Goal of this presentation Describe and demystify “The Cloud” What is it? How is it different from web services? ROI and TCO case studies

What is The Cloud Once upon a time… Sam the server man discovered his servers were underutilized To optimize their utilization rate, he made his servers available to others This was really nothing new, as ISP’s had been around for decades

But… Sam’s Servers did more than just host HTML pages, they also: Provided infrastructure solutions And hosted services that his customers were not capable of hosting Essentially, they were “servers for rent” This commercialization of web service hosting became known as…

Cloud Computing

What goes on behind the cloud?

By Definition Cloud computing is… Cloud computing follows… On-demand Self-service services Delivered in a metered fashion via a network (i.e., the Internet) Cloud computing follows… A multi-tenancy model Within a virtualized, elastic environment

Terms

Multi-tenancy Virtualized servers are used by many

Virtualization Similar to logical hard drives, virtualization converts one physical server into many (virtual) servers Doing this requires: Physical host server Host OS + Virtualization software (e.g., Hypervisor, Hyper-V) Management suite software

Elasticity Similar to scalability

Cloud Deployment Models

The Hybrid Model

What services are offered in the Cloud? If its not html hosting, what services are offered?

aaS as a Service

Where does GIS fit aaS? Brainstorm…

How does The Cloud differ from Web Services we already learned about? Brainstorm By definition cloud computing is… On-demand Self-service services Delivered in a metered fashion via a network (i.e., the Internet) Cloud computing follows… A multi-tenancy model Within a virtualized, elastic environment

Let’s Compare Cloud Servers Virtualized Servers On-demand Self-service Delivered in a metered fashion Multi-tenancy Virtualized Elastic On-demand Self-service Delivered in a metered fashion Multi-tenancy Virtualized Elastic

ROI and TCO Scenarios TCO? ROI… Case study #1, a small Idaho county wants to make GIS maps of the county available via the web Case study #2, large research university wants to make GIS maps available via the web

The Partly Cloudy Approach Own the base, rent the spike

Considerations Reasons for not using the cloud Security Service Level Agreement

Questions?