An Introduction to Cloud Computing - Part1: What is Cloud Computing?
An introduction to cloud computing
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Transcript of An introduction to cloud computing
Introduction to Cloud Computing
Giovanni Toraldo System administrator
Before the cloud
A server for each service:Hardware requirements
Software requirements (OS)
Security requirements
Problems:Hardware maintenance
Electric bills
Provisioning delays
Cloud prerequisites
There are few underlying technologies developed in the last years:
Virtualization
Distributed Storage
Web
Virtualization
The creation of a virtual machine that acts like a real computer with an operating system. Software executed on these virtual machines is separated from the underlying hardware resources. - Wikipedia
Distributed storage
is any file system that allows access to files stored on multiple hosts and share them via a network. - Wikipedia
Web
communication between two parts over the Web (Internet), typically conveyed using HTTP, XML and other Web-related standards. - Wikipedia
The Cloud
Infrastructure as a service (IaaS)
Computational power
Storage space
Network connectivity
Platform as a Service (PaaS)
Computing platform for web applications
Software as a Service (SaaS)
Access to a web application, completely managed (backups, upgrades, etc)
Cloud advantages
Pay-per-use, minimum investment
Availability, no worries about hardware faults
Elasticity, scaling up and down in seconds
Everything is manageable from a web interface
How to create our own cloud
OpenNebula is the industry standard open-source product for data center virtualization - http://www.opennebula.org
OpenNebula Architecture
Credits
http://www.flickr.com/photos/richard_jones/3245444875/
http://www.flickr.com/photos/joncrel/3238202791/
http://en.wikipedia.org/wiki/File:Cloud_computing.svg
http://www.flickr.com/photos/chrisdag/6073931293
http://www.flickr.com/photos/35762175@N05/3310686922
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