(1) Very large scale
"Cloud" has a considerable scale. Google cloud computing has more than 1 10,000 servers, and Amazon, IBM, Microsoft, Yahoo and other "clouds" have hundreds of thousands of servers. Enterprise private clouds generally have hundreds of servers. "Cloud" can give users unprecedented computing power.
(2) Virtualization
Cloud computing supports users to obtain application services at any place and using various terminals. The requested resources come from the "cloud" rather than a fixed tangible entity. The application runs somewhere in the "cloud", but in fact, users don't need to know or worry about the device on which the application runs. All we need is a notebook or a mobile phone, and we can achieve everything we need through network services, even such tasks as supercomputing.
(3) High reliability
"Cloud" adopts measures such as fault tolerance of multiple copies of data and isomorphic interchange of computing nodes to ensure high reliability of services. Using cloud computing is more reliable than using local computers.
(4) universality
Cloud computing is not specific to a particular application. With the support of cloud, ever-changing applications can be constructed, and the same cloud can support different applications at the same time.
(5) High scalability
The scale of the "cloud" can be dynamically expanded to meet the growing needs of applications and users.
(6) on-demand service
"Cloud" is a huge resource pool, which you can buy on demand; Clouds can be charged like tap water, electricity and gas.
(7) extremely cheap
Because the special fault-tolerant measures of "cloud" can use extremely cheap nodes to form a cloud, the automatic centralized management of "cloud" makes a large number of enterprises not have to bear the increasingly high cost of data center management, and the universality of "cloud" greatly improves the utilization rate of resources compared with the traditional system, so users can fully enjoy the low-cost advantage of "cloud", and often it takes only a few hundred yuan and a few days to complete tasks that used to take tens of thousands of yuan and months.
Cloud computing can completely change people's future lives, but at the same time, we should pay attention to environmental issues, so as to truly contribute to human progress, rather than simply upgrading technology.
Question 2: What does Google cloud computing technology include? The key technologies of Google cloud computing mainly include: Google file system GFS and distributed computing programming model.
MapReduce, distributed lock service Chubby and distributed structured data storage system BigTable.
These include:
1)GFS provides the ability to store and access massive data;
2)MapReduce makes the parallel processing of massive letters easy;
3)Chubby ensures the synchronization of concurrent operations in distributed environment;
4)BigTable makes the management and organization of massive data very convenient.
Question 3: What are the characteristics of cloud computing? As we all know, cloud computing is to use computer clusters to form a data center and deliver it to users in the form of services, so that users can purchase cloud computing resources on demand just like using water and electricity. Combined with the application background of cloud computing, the characteristics of cloud computing can be summarized as follows:
1 bomb * * *
The scale of services can be rapidly expanded to automatically adapt to the dynamic changes of business load. The resources used by users are consistent with business requirements, which avoids the decline of service quality or waste of resources caused by overload or redundancy of server performance.
2 Resource sharing
Resources are managed by the * * * shared resource pool. Using virtualization technology, resources are shared by different users, and the placement, management and allocation strategies of resources are transparent to users.
Pay on demand
Provide users with resources such as applications, data storage and infrastructure in the form of services, and automatically allocate resources according to users' needs without the intervention of system administrators.
4 service can be charged
Monitor the user's resource usage and charge the service according to the resource usage.
Universal access
Users can use various terminal devices (such as PC, notebook computer, smart phone, etc.). Access cloud computing services through the Internet anytime, anywhere.
straight
Because cloud computing has the above five characteristics, users can store personal emails, photos, buy music from cloud computing service providers, store configuration files and information, and communicate with social networking sites (for example,
Facebook, LinkedIn, MySpace
) interaction, find driving and walking routes through cloud computing, develop websites, and interact with other users in cloud computing. So that users can handle life, work and other affairs more conveniently and quickly. This is why cloud computing can be used in a short time.
An important factor in the rapid spread and popularity of the country.
Cloud and software and services! Cloud computing experts around you! !
Question 4: What service levels does cloud computing include? Cloud computing can be considered as including the following service levels: Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS). 1, iaas (infrastructure-as-a-service): Infrastructure-as-a-service application: consumers can obtain services from a perfect computer infrastructure through the Internet. 2.PaaS(Platform-as-a-Service): Platform as a service application: PaaS actually refers to taking the platform of software research and development as a service and submitting it to users in the mode of SaaS. Therefore, PaaS is also an application of SaaS mode. However, the emergence of PaaS can accelerate the development of SaaS, especially the development of SaaS applications. 3.SaaS (Software as a Service): Software as a Service Application: It is a mode of providing software through the Internet. Users don't need to buy software, but rent network-based software from providers to manage business activities.
Question 5: What are the characteristics of cloud computing? Iaas, saas, paas, these three forms, I wonder if that's what you're asking?
Question 6: What is cloud computing? What does cloud computing contain? What is the relationship between cloud computing and Internet of Things? Maybe it will give you some inspiration!
At present, cloud computing is a new thing, and the risks and opportunities of new things coexist.
One of the most valuable concepts of cloud computing is resource integration, and the other is profit model as service.
Express in a straightforward way:
Cloud computing is the integration of resources to provide services (on-demand distribution and payment), which is mainly reflected in three levels: technology and service.
One is the hardware infrastructure level, which allows hardware resources to provide services in time;
(Customers want hardware environment resources, log in to the resource pool for customization, then pay the money, and finally get the resources, and pay as much as they want;
Payment targets are: application developers, enterprise IT managers, application platform suppliers, etc. );
One is the application platform layer, which allows the application platform to provide services in time;
(The supplier can improve the software platform, develop, deploy, manage and monitor applications, and provide an open APP-like store;
The object of payment is: application developers. )
One is the application layer, which allows applications to provide services in time;
(Application vendors deploy applications on the application platform, and users can use these applications, enjoy services and pay in time;
The object of payment is: end consumers. )
On-demand service:
Like hydropower, you can log in to the application portal and use the application directly from the beginning to the end.
You don't even need to install an application locally, just like turning on the tap and paying for it. Essentially, it is a kind of promotion.
Service and profit model.
Therefore, cloud computing should learn from many aspects.
However, their fundamental foundation is computer science and technology, including network, hardware and software.
Only the hardware or platform will focus on virtual machines, grid computing, distributed computing and other technologies.
Applications will pay more attention to user experience and mass internet, and the main application technology is software open technology.
In particular, it may be enthusiastic about the development of WIFI mobile applications for android or ios or wm.
The next wave of IT is cloud computing, Internet of Things, artificial intelligence and biotechnology.
At present, cloud computing is a new thing, the shortage of teaching resources is normal, and the risks and opportunities of new things coexist.
Please believe that the opportunity has really passed through this village. Without this store, cloud computing is now the same as the original computer major.
When it is mature, when you see its development, then you are behind the times and can only pick up cigarette butts behind your predecessors.
Seize the opportunity to study this major. At present, cloud computing is in the early stage of development, and just graduated is a good time to make a big impact!
I believe that choosing this new industry is risky, but the opportunity will always belong to the first person who dares to eat crabs.
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From: Tracing back to Guangzhou-Internet of Things, Cloud Computing, People-oriented Intelligence-Building a Green Future
Question 7: What are the characteristics of cloud computing? The characteristics of cloud computing are as follows:
1 very large scale
"Cloud" has a considerable scale. Google cloud computing has more than 1 10,000 servers, and Amazon, IBM, Microsoft, Yahoo and other "clouds" have hundreds of thousands of servers. Enterprise private clouds generally have hundreds of servers. "Cloud" can give users unprecedented computing power.
2 Virtualization
Cloud computing supports users to obtain application services at any place and using various terminals. The requested resources come from the "cloud" rather than a fixed tangible entity. The application runs somewhere in the "cloud", but in fact, users don't need to know or worry about the device on which the application runs. All we need is a notebook or a mobile phone, and we can achieve everything we need through network services, even such tasks as supercomputing.
3 High reliability
"Cloud" adopts measures such as fault tolerance of multiple copies of data and isomorphic interchange of computing nodes to ensure high reliability of services. Using cloud computing is more reliable than using local computers.
4 universality
Cloud computing is not specific to a particular application. With the support of cloud, ever-changing applications can be constructed, and the same cloud can support different applications at the same time.
5 High scalability
The scale of the "cloud" can be dynamically expanded to meet the growing needs of applications and users.
Question 8: What cloud computing platforms can be divided into three categories: storage-oriented cloud platforms focusing on data storage, computing-oriented cloud platforms focusing on data processing, and comprehensive cloud computing platforms with both computing and data storage processing.
Cloud computing platform is a battleground for military strategists in the era of cloud computing.
1. Open source cloud computing platform
(1)AbiCloud(Abiquo company)
AbiCloud is an open source cloud computing platform for enterprises, which enables enterprises to create and manage large and complex IT infrastructures (including virtual servers, networks, applications, storage devices, etc.). ) in a fast, simple and extensible way.
(2)Hadoop (Apache Foundation)
This project is an open source project that completely imitates Google architecture, mainly including Map/Reduce and HDFS file system.
(3) Eucalyptus Project (University of California)
Create an open source interface to enable enterprises to use their internal IT resources (including servers, storage systems and network devices) to build a cloud compatible with Amazon EC2.
(4)MongoDB( 10gen)
MongoDB is a high-performance, open-source and modeless document database, which can be used to replace the traditional relational database or key/value storage mode in many scenarios.
(5)Enomali *** Flexible Computing Platform
It provides a cloud computing framework with functions similar to EC2. Enomali *** is based on Linux and supports Xen and KVM. Unlike other pure IaaS solutions, Enomali *** provides a software stack based on Turbo Gears Web application framework and Python.
(6) Globus
Nimbus meets the needs of scientific computing, and realizes the cloud computing solution of Infrastructure as a Service (IaaS) through a set of open source tools.
2. Cloud computing platform providers
(1) Microsoft
Technical features: integrating the software and data services it uses.
Core technology: large-scale application software development technology
Enterprise service: Azure platform
Development language:. net
(2) Google
Technical features: storage and computing level expansion ability
Core technologies: parallel decentralized technologies MapReduce, BigTable, GFS.
Enterprise service: Google AppEngine, application hosting service.
Development languages: Python, Java
(3)IBM
Technical features: integrate all its software and hardware services.
Core technologies: grid technology, distributed storage and dynamic load.
Enterprise services: virtual resource pool supply and enterprise cloud computing integration scheme.
(4) Oracle Bone Inscriptions
Technical features: flexible software and hardware virtual platform.
Core technologies: Orackle's data storage technology and Sun's open source technology.
Enterprise services: Oracle database on EC2, OracleVM and Sun xVM.
⑤ Amazon
Technical features: flexible virtual platform
Core technology: virtualization technology Xen
Enterprise services: S3 EC2, SQS simple db.
Development language:
(6) Sales force
Technical features: Flexible and customizable commercial software.
Core technology: application platform integration technology
Enterprise service: strength
Development languages: Java, APEX
(7) Electromagnetic compatibility
Technical features: information storage system and virtualization technology.
Core technology: Vmware's virtualization technology, first-class storage technology.
Enterprise services: Atoms cloud storage system, private cloud solution.
(8) Alibaba
Technical features: Flexible and customizable commercial software.
Core technology: application platform integration technology
Enterprise services: software interconnection platform and cloud e-commerce platform.
(9) China Mobile
Technical features: solid network technology and rich bandwidth resources.
Core technologies: underlying cluster deployment technology, resource pool virtualization technology, and network related technologies.
To learn more about open source, please visit the LUPA community. ...& gt& gt
Question 9: What does cloud computing management include? Including security management is data security, including hardware platform management, virtual platform management (that is, virtual hardware platform for operation and maintenance), middleware management of application development, and application management of cloud computing. This is divided according to the "cloud" of cloud computing.
Question 10: What is cloud computing? What are its related technologies? Cloud computing is very extensive.
It has something to do with network, server and storage.
It is also related to various applications. You know that Apple's cloud is an application developed in cooperation with a third party for everyone to use.
Remember, the number of resources is certain, but the utilization rate is the key.
Reuse the word; Also, the word flexibility is mentioned a lot in cloud computing.