云，网格和集群之间有什么区别？ [英] What is the difference between Cloud, Grid and Cluster?

问题描述

云，群集和网格有什么区别？请给出一些例子，因为云的定义非常广泛。如在另一个问题中回答的，我可以

集群和网格的示例是什么？

<集群与云和网格的不同之处在于，集群是由局域网（LAN）连接的一组计算机，而云和网格的规模更大，可以在地理上分布。另一种说法是说，一个集群紧密耦合，而一个网格或一个云松散耦合。此外，集群由具有类似硬件的机器组成，而云和网格由具有可能非常不同的硬件配置的机器组成。

要了解更多关于云计算，我建议您阅读本文：
http：//www.eecs。 berkeley.edu/Pubs/TechRpts/2009/EECS-2009-28.pdf

以下是上述文件的摘要：

云计算是指通过互联网提供的应用程序和提供这些服务的数据中心中的硬件和
系统软件。服务本身长期以来被称为
软件即服务（SaaS）。数据中心硬件和软件是我们所谓的云。当一个云以
的付费方式提供给一般公众时，我们称之为公共云;所售的服务是
Utility Computing。我们使用术语私有云来指代企业或其他组织的内部数据中心，
不向公众提供。因此，云计算是SaaS和实用计算的总和，但
不包括私有云。人们可以是SaaS的用户或提供者，也可以是效用计算的用户或提供者。

云与网格之间的区别可以表示如下：

1. 资源分配：云计算是一个集中模型，而网格计算是一个分散模型，其中计算可能在许多管理域上发生。 >




2. 所有权：网格是由多个地点的多方拥有并连接在一起的计算机集合，以便用户可以共享资源的组合力量。而云是通常由单方所有的计算机的集合。

云的示例：Amazon Web Services（AWS），Google App Engine

网格示例：FutureGrid

Dropbox，Gmail，Facebook，Youtube，Rapidshare等都是云计算服务的示例。

What is the difference between Cloud, Cluster and Grid? Please give some examples of each as the definition of cloud is very broad. As answered in another question, can I call Dropbox, Gmail, Facebook, Youtube, Rapidshare etc. a Cloud?

What are the examples of Cluster and Grid as well?

解决方案

Cluster differs from Cloud and Grid in that a cluster is a group of computers connected by a local area network (LAN), whereas cloud and grid are more wide scale and can be geographically distributed. Another way to put it is to say that a cluster is tightly coupled, whereas a Grid or a cloud is loosely coupled. Also, clusters are made up of machines with similar hardware, whereas clouds and grids are made up of machines with possibly very different hardware configurations.

To know more about cloud computing, I recommend reading this paper: http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-28.pdf

The following is an abstract from the above paper:

Cloud Computing refers to both the applications delivered as services over the Internet and the hardware and systems software in the datacenters that provide those services. The services themselves have long been referred to as Software as a Service (SaaS). The datacenter hardware and software is what we call a Cloud. When a Cloud is made available in a pay-as-you-go manner to the general public, we call it a Public Cloud; the service being sold is Utility Computing. We use the term Private Cloud to refer to internal datacenters of a business or other organization, not made available to the general public. Thus, Cloud Computing is the sum of SaaS and Utility Computing, but does not include Private Clouds. People can be users or providers of SaaS, or users or providers of Utility Computing.

The difference between a cloud and a grid can be expressed as below:

1. Resource distribution: Cloud computing is a centralized model whereas grid computing is a decentralized model where the computation could occur over many administrative domains.

2. Ownership: A grid is a collection of computers which is owned by multiple parties in multiple locations and connected together so that users can share the combined power of resources. Whereas a cloud is a collection of computers usually owned by a single party.

Examples of Clouds: Amazon Web Services (AWS), Google App Engine

Examples of Grids: FutureGrid

Dropbox, Gmail, Facebook, Youtube, Rapidshare, etc are all examples of cloud computing services.

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