Jerry Horgan - Understanding Cloud Computing

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Presentation for Bizcamp South East - 12th June 2010

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  • I have 1 physical server, I have 1 logical server.
    I have 1 physical server, I have 10 logical servers.
  • Horizontal scaling is linear.
  • If your not an IT company, then SaaS is as much as you need.
  • They’ve a big inventory of services.
  • Jerry Horgan - Understanding Cloud Computing

    1. 1. A guide to understanding cloud computing Jerry Horgan
    2. 2. Buzzwords • Virtualisation • Cloud Computing • Utility Computing • Everything as a Service (?aaS)
    3. 3. So what is Cloud Computing? • Its Virtualisation • Its Utility Computing • Its Software as a Service • Its Platform as a Service • Its Infrastructure as a Service • Its ??? as a Service • Its all about Services
    4. 4. So what isn’t Cloud Computing? • A silver bullet • 100% reliable - Don’t believe the hype
    5. 5. So what is virtualisation? • It’s the abstraction of logical resources from physical resources. – And that means? – Sizing the logical resources to the service requirement rather than sizing the physical resources to the service requirement.
    6. 6. Which brings us to Scaling • Adding capacity to our service – Promotions, one-off events (short-lived) – Natural growth • Horizontal vs Vertical scaling • Scaling is traditionally vertical – Vertical doesn’t scale linearly, more exponentially
    7. 7. Utility Computing • Think electricity • Paying for computing resources – Pay as you Grow / Go – Provider worries about the back-end systems.
    8. 8. as a Service • SaaS • PaaS • IaaS • Depends on your needs or where you are in your IT application development cycle
    9. 9. Software as a Service (SaaS) • Provides a virtual environment for you to deploy a service (application) in. • Salesforce.com • Google Apps • Or your website
    10. 10. SalesForce.com • CRM Based Apps, Email, Call-Center Knowledge-Base • €70 per person per month • http://www.salesforce.com/eu/
    11. 11. Google Apps • Email, Calendar and Office applications • $50 per person per year • http://www.google.com/apps/intl/en/business/ – Compare this to a PC, Email Server / Hosting, and MS Office costs • Even over 3-5 years
    12. 12. SaaS - Apps run in the cloud • Applications / Documents available from anywhere – Work from home or on the road • You don’t require powerful desktops or laptops – Access devices can be much cheaper / smaller
    13. 13. Platform as a Service (PaaS) • Provides a virtual server for you to configure. • This can be a Virtual Machine, a Virtual Private Server (VPS) or some other cloud service.
    14. 14. Amazon - Elastic Cloud • The numero uno • http://aws.amazon.com/ec2/
    15. 15. vCloud • VMWares cloud offering • http://www.vmware.com/products/vcloud/ • http://www.vmware.com/solutions/cloud-computing/
    16. 16. Infrastructure as a Service (IaaS) • Provides a complete network, data storage and set of servers – This usually comes from your ISP or Data- Center provider
    17. 17. Is it all out there in the ether? • Maybe • Private cloud vs Public cloud – You can do both • Virtual private cloud …
    18. 18. What tools can I use? • Vmware ESXi http://www.vmware.com/products/esxi/ • Citrix XEN http://www.citrix.com/English/ps2/products/product.asp? contentID=683148 • UEC http://www.ubuntu.com/cloud • KVM http://www.linux-kvm.org/page/Main_Page • Hyper-V http://www.microsoft.com/windowsserver2008/en/us/hyperv- main.aspx • VirtualBox http://www.virtualbox.org/
    19. 19. Warning! • How safe is your data in the cloud? – Data protection, Discovery orders, FoI • What happens when you loose your Internet connection? – Do we need something better than DSL? • That depends on our uptime requirement

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