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Cloud Computing : Cloud Computing Services and Cloud Operating System

2. Cloud Computing

2.4 Some cloud computing services

1. Email Services: Allows sending of bulk emails at minimal costs. Many cloud email service providers offer domain-name capabilities, so that your emails appear to be sent and received on your own domain, even though you are using their servers. Also, you don't have to worry about Spam protection and software updating. Some cloud email services are Google Apps, PanTerra Networks, Cisco WebEx Email, Yahoo Zimbra, IBM LotusLive iNotes, Microsoft Exchange online and Rackspace Email.

2. Document sharing: This service store files on the server and allows you to access it from anywhere. They can be as simple as a file repository to more sophisticate things that create entire networks of virtual computers for applications and databases. Some cloud document sharing services are: Microsoft's Live Office, Google Docs and Box.net.

3. Database services: These services provide database running on cloud computing platform. Users can run databases on the cloud independently, using a Virtual Machine image, or they can purchase access to a database service, maintained by a cloud database provider. Of the databases available on the cloud, some are SQL-based and some use a NoSQL data model. Some cloud database services are: Microsoft SQL Azure Database, SimpleDB by Amazon Web Services, Google App Data Store.

4. Application Hosting: This service provides Web hosting and much more, including storage, load-balancing, elastic scalability, authentication services and integration with local network. It reduces the overhead cost of server hardware and other applications, and is suitable for companies that are looking forward to cut cost. Some cloud application hosting services are: Microsoft Windows Azure, Google App Engine, Rackspace.

2.5 Cloud Operating System

A cloud operating system is a type of operating system designed to operate within cloud computing and virtualization environments. A cloud operating system manages the operation, execution and processes of virtual machines, virtual servers and virtual infrastructure, as well as the back-end hardware and software resources. A cloud operating system may also be called a virtual operating system. Cloud OS allows better usage of data center resources including storage, network and computing.

Microsoft Windows Azure and Google Chrome OS are among current examples of cloud operating systems.

How does an OS work on cloud?

Like a server Operating System (OS), a cloud OS is responsible for managing resources. In a server (ex: a PC), the OS is responsible for managing the various hardware resources, such as CPU, memory,disks,network interfaces. It hides the hardware operation details and allows these scarce resources to be efficiently shared. A cloud OS serves the same purpose. Instead of managing a single machines resources, a cloud OS is responsible for managing the cloud infrastructure, hiding the cloud infrastructure details from the application programmers and coordinating the sharing of the limited resources. Cloud is a simplified Operating System that runs just on a Web browser, providing access to a variety of web-based applications that allow the user to perform many simple tasks without booting a full-scale Operating System. Because of its simplicity, cloud can boot in just a few seconds. The operating system is designed for Note books,Mobile internet devices and PCs that are mainly used to browse the internet. From cloud the user can quickly boot into the main OS, because Cloud continues booting the main OS in the background.

Goals of Cloud Operating system

  • Being able to work from everywhere.

  • Sharing resources easily between different work centers at company, or working from different places and countries on the same projection.

  • Being able to continue working if you have to leave your local computer or if it crashes, without losing data or time. Just log in to your Cloud Operating System from another place and continue working.

Some cloud Operating systems are:

1. Netvibes: Netvibes is a cloud OS that is designed to run within any popular browser that can be used as an Ad-free cloud computing solution.

Features of this OS

  • Focuses on being independent of platforms and devices, collaboration with browsers and platforms. One can download it free and run it as a plug-in in any well-known browser.

  • Netvibes includes word editor, application for presentation, compatible environment for groupware, SMTP client for email and much more.

  • Along with keeping data online, it allows the user to work with both local and cloud applications with maximum security provided.

  • This cloud OS can provide support for over 100 mobile devices and you can also convert files for sharing when required.

2. Amoeba OS: Amoeba is a general-purpose distributed operating system to take a collection of machines and works as one single integrated system.

Features of this OS

  • Intended for distributed computing when multiple independent users working on different projects as well as parallel computing when one user uses multiple CPUs to fulfill any purpose.

  • The policy of application is completely determined by user-level programs yet the user doesn’t need to know the number or the location of CPU as well as where the files are stored.

  • The policy of application is completely determined by user-level programs yet the user doesn’t need to know the number or the location of CPU as well as where the files are stored.

  • Does not need to permit distinctive remote login instructions to have the benefit of multiple processors or do distinctive remote mount operations to reach faraway files.

  • The fundamental communication procedure is to approve the message to be sent and get replies – 3 pickups with a minimum of delay.

  • The machine can be spread around a building on a LAN even without having some kind of machine.

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