1.2.1 DISTRIBUTED SYSTEMS In Cloud Computing
1.2.1 DISTRIBUTED SYSTEMS In Cloud Computing
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It is a collection of independent computer that appears to its users as a single coherent system.
Distributed system are Dynamic
Distributed systems are usually Overlay Network.
Examples:- peer to peer, VoIP,
Characteristics Of a Distributed system.
1.No shared clock :- order events-logical clock is achieved by synchronization.
2.No Shared Memory :- state is distributed throughout the system.
3.Concurrency:- tasks are executed concurrently.
4.Heterogeneity and Loose Coupling :- not required- different Oss and technologies
EVOLUTION OF DISTRIBUTE SYSTEM TECHNOLOGIES 1950, 2010
There major milestones have led to cloud computing
1.Mainframes Computing :- These were the first examples of large computational facilities leveraging multiple processing units. Mainframes were powerful, highly reliable computers specialized for large data movement and massive input/ output operations. One of the most attractive features of mainframes was the ability to be highly reliable computers that were “always on ” and capable of tolerating failures transparently.
2.Cluster Computing :- It started as a low cost alternative to the use of mainframes and supercomputers. These machines could then be connected by a high-bandwidth network and controlled by specific software tools that manage them as a single system. Staring in the 1980s, cluster become the standard technology for parallel and high performance computing. Cluster technology contributed considerably to the evolution of tools and frameworks for distributed computing, including Parallel Virtual Machine, Message Passing Interface.
3.Grid Computing :- Grid computing appeared in the early 1990s as an evolution of cluster computing. Grid initially developed as aggregations of geographically dispersed clustered by means of internet connections. Different from a large cluster, a computing grid was a dynamic aggregation of heterogeneous computing nodes, and its scale was nationwide or even worldwide.
Cloud computing is often considered the success or of grid computing. In reality , item bodies aspects of all these three major technologies. Computing clouds are deployed in large datacenters hosted by a single organization that provides services to others. Clouds are characterized by the fact of having virtually infinite capacity , being tolerant to failures , and being always on, as in the case of mainframes. In many cases, the computing nodes that form the infrastructure of computing clouds are commodity machines, as in the case of clusters. The services made available by a cloud vendor are consumed on a pay-per-use basis , and clouds fully implement the utility vision introduced by grid computing.
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Characteristics Of a Distributed system.
1.No shared clock :- order events-logical clock is achieved by synchronization.
2.No Shared Memory :- state is distributed throughout the system.
3.Concurrency:- tasks are executed concurrently.
4.Heterogeneity and Loose Coupling :- not required- different Oss and technologies
EVOLUTION OF DISTRIBUTE SYSTEM TECHNOLOGIES 1950, 2010
There major milestones have led to cloud computing
1.Mainframes Computing :- These were the first examples of large computational facilities leveraging multiple processing units. Mainframes were powerful, highly reliable computers specialized for large data movement and massive input/ output operations. One of the most attractive features of mainframes was the ability to be highly reliable computers that were “always on ” and capable of tolerating failures transparently.
2.Cluster Computing :- It started as a low cost alternative to the use of mainframes and supercomputers. These machines could then be connected by a high-bandwidth network and controlled by specific software tools that manage them as a single system. Staring in the 1980s, cluster become the standard technology for parallel and high performance computing. Cluster technology contributed considerably to the evolution of tools and frameworks for distributed computing, including Parallel Virtual Machine, Message Passing Interface.
3.Grid Computing :- Grid computing appeared in the early 1990s as an evolution of cluster computing. Grid initially developed as aggregations of geographically dispersed clustered by means of internet connections. Different from a large cluster, a computing grid was a dynamic aggregation of heterogeneous computing nodes, and its scale was nationwide or even worldwide.
Cloud computing is often considered the success or of grid computing. In reality , item bodies aspects of all these three major technologies. Computing clouds are deployed in large datacenters hosted by a single organization that provides services to others. Clouds are characterized by the fact of having virtually infinite capacity , being tolerant to failures , and being always on, as in the case of mainframes. In many cases, the computing nodes that form the infrastructure of computing clouds are commodity machines, as in the case of clusters. The services made available by a cloud vendor are consumed on a pay-per-use basis , and clouds fully implement the utility vision introduced by grid computing.
CLOUDCOMPUTING THEORY PLAYLIST
CLOUD COMPUTING PRACTICAL PLAYLIST
Subscribe the Channel Link
IF any Query or Doubt DM on Instagram
#bansodetechsolution #ajupgrading #bansode_ajay_2102
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