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Some additional words about cloud computing

Some additional words about cloud computing. Lionel Brunie National Institute of Applied Science (INSA) LIRIS Laboratory/DRIM Team – UMR CNRS 5205 Lyon, France http://liris.cnrs.fr/lionel.brunie. What’s a Cloud ?.

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Some additional words about cloud computing

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  1. Some additional words about cloud computing Lionel Brunie National Institute of Applied Science (INSA) LIRIS Laboratory/DRIM Team – UMR CNRS 5205 Lyon, France http://liris.cnrs.fr/lionel.brunie PhD course - Milan, March 2010 - 20/12/2019

  2. What’s a Cloud ? • "A Cloud is a type of parallel and distributed system consisting of a collection of interconnected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements established through negotiation between the service provider and consumers” (Buyya et al.) • “A large-scale distributed computing paradigm that is driven by economies of scale, in which a pool of abstracted, virtualized, dynamically-scalable, managed computing power, storage, platforms, and services are delivered on demand to external customers over the Internet” (Foster et al.) • Start point: October/November 2007 - IBM Blue Cloud PhD course - Milan, March 2010 - 20/12/2019

  3. Visit of a Cloud vendor web site • http://www.ibm.com/ibm/cloud/ • « Values to customers include: • Reducing IT management complexity and skill requirements • Sharing resources among multiple applications • Accelerating application launches • Supporting both existing and emerging, data-intensive workloads » PhD course - Milan, March 2010 - 20/12/2019

  4. Example: Amazon EC2/S3 • Compute Cloud EC2 (Elastic Cloud Computing) • « Private » virtualized servers (« instances ») of different types • Example: High-CPU Extra Large Instance • 7 GB of memory • 20 EC2 Compute Units • 1690 GB Storage • Pricing on a per hour basis for each instance type: from $0.084/hour for the smallest "On-Demand" virtual machine running Linux to 12x more for the largest one running Windows (Nov. 2009). The data transfer charge ranges from $0.08 to $0.15 per gigabyte, depending volume • Data Cloud S3 (Simple Storage Service) • from $0.55 to $0.15 per GB-month, + bandwidth usage (from $0.08 to 0.15 per GB) + requests (from $0.01 to $0.1 per 1000 requests) • 102 billion objects stored files (March 2010) • data transfer is charged by TB / month data transfer, depending on the source and target of such transfer. PhD course - Milan, March 2010 - 20/12/2019

  5. IaaS, PaaS, SaaS • Infrastructure as a Service (IaaS) • provides computing environments/infrastructure i.e., hardware, software • the provisioned infrastructure can dynamically scale up and down depending on the actual needs • Amazon EC2 and S3 • Platform as a Service (PaaS) • high-level integrated environment to build and deploy applications • restrictions on the type of applications • but scalable platform • Google’s App Engine for deploying Web applications • Software as a Service (SaaS) • delivers software to consumers through the Internet • Salesforce: online CRM (Customer Relationship Management) Services ; Live Mesh from Microsoft: files and folders synchronization PhD course - Milan, March 2010 - 20/12/2019

  6. Characteristics • From the customer point of view: • Scalability • Reliability • Security and Privacy • Ubiquitous and fast access • Quality of Service • Service Level Agreement • Pricing system • Simple to use • From the internal point of view • Virtualization • « Grid » management PhD course - Milan, March 2010 - 20/12/2019

  7. Comparison of some cloud platforms From Foster et al. PhD course - Milan, March 2010 - 20/12/2019

  8. A market oriented vision of a cloud based IT world From Buyya et al. PhD course - Milan, March 2010 - 20/12/2019

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