我们不时听到云(Cloud)这个词，但我相信我们中的许多人对云(Cloud)和云计算(Cloud Computing)并不是很确定。所以首先，重要的是要了解什么是云。
什么是云？
当我们说云时，云(Cloud)只是互联网的隐喻，我们只是指互联网，只是我们使用互联网使用的服务——通过我们的网络浏览器。现在当我说云(Cloud) 计算(Computing)时，没有标准的行业定义来谈论云计算，因为它处于初期阶段，并且只有少数公司正在投资云计算和虚拟化，这通常被称为未来趋势(FUTURE TRENDS)。
什么是云计算？
但是，简单来说，”
Cloud Computing is more than the few internet-based services which we access through our web browsers, it is the fundamental shift from the traditional client/server or n-tier architecture, and it primarily focuses on the effective utilization of the IT INFRASTRUCTURE “.
大多数云服务提供商以(Cloud Service)“即用即付(pay as you go)”模式提供此服务。“现收现付”模式意味着您只需为您使用的服务和您使用的一些资源付费。您只需为您使用的那些服务和资源付费。简而言之，所提供的一切实际上都是您使用的服务。
您一定认为它只是另一种计算模型，那么为什么要对它感兴趣呢？那么(Well)这就是它的答案！让我简单介绍一下它的特点，我相信你会同意它是下一代模型。
特点如下：
- 可扩展性：(Scalable:)这些服务是高度可扩展的服务，而传统服务往往会在一定程度上达到极限，但这些服务的设计和管理是为了满足世界各地人们的需求，因为这些服务在具有非常好的地理分布。
- 自动化服务管理(Automated Services Management)：嗯，这只是意味着您不必担心人力、服务器、软件升级、硬件等，所有这些都由云服务提供公司管理。我将在以后关于Windows Azure的文章中详细说明这一点。
- 高可用性：(High Availability: )它们拥有几乎 99.9999% 的正常运行时间服务，因为它们在全球拥有数千个数据中心，并且它们有数百个在其上复制的实例，因此即使一台服务器出现故障，其他服务器也会跳入为客户端提供服务。
- 多租户(Multi-tenancy)：一个云 -(Cloud –)许多租户，这是大多数云(Cloud)服务提供商有效利用底层 IT 基础设施的方式。他们有许多客户，其服务在单个数据中心上运行。
- 虚拟化(Virtualization)：它实际上是它最重要的方面。云(Cloud)服务提供商拥有数据中心，他们使用虚拟机管理程序虚拟运行数千台服务器，从而将资源的有效利用率从 40-45% 提高到 85% 左右。
所以它的实际作用是，它从你那里承担了管理服务器、数据库、安全补丁、软件升级、基础设施等（在公共云的情况下）的所有压力。
关于将企业迁移到云服务(Cloud Service)的一些常见误区
对于任何中小型企业来说，要想取得成功，就必须具备某些特征，例如业务敏捷性、灵活性和节省额外成本的能力。所有这一切，以及其他一切都可以通过迁移到云技术(Cloud Technology)(Cloud Technology)来实现，但互联网(Internet)上大量自相矛盾的信息让我们无法做出正确的选择。了解事实当然可以帮助打破云神话并消除我们可能认为是正确的错误观念。
云计算神话
第一个神话(The first myth)。如果我们的数据迁移到云端，我们的业务将不再能够控制我们的技术。这是你需要知道的！当您迁移到云端时，用于维护硬件和升级软件的时间会大大减少。如何？用于维护本地服务器以进行电子邮件存储和工作负载的资本预算大大减少。因此，与其在服务器上花费大量资源，不如从战略上考虑以更谨慎的方式支持您的业务需求。这将帮助您花费更多的时间和精力来改进业务运营和启动敏捷计划。
第二个神话(The second myth)。将数据保存在本地比在云中更安全。真的？当然不是！您的本地系统本质上并不比它们在云中更安全。安全专家表示，网络盗窃问题呈上升趋势。许多公司经常遭到黑客攻击，因此安全已成为一项全职工作，因为它需要一个专家团队来阻止安全漏洞。幸运的是，一些像微软(Microsoft)这样提供云服务的公司雇佣了这个行业中最优秀、最聪明的人。其团队使用诸如安全开发生命周期(Security Development Lifecycle)之类的流程；流量节流；预防、检测和缓解许多公司没有资源确保的违规行为。
除此之外，Office 365还拥有 99.9% 的财务支持的正常运行时间保证，并与最新的法规和规则保持同步：HIPAA和Sarbanes-Oxley、联邦信息安全管理法案(Federal Information Security Management Act)( FISMA )、ISO 27001、欧盟(European Union)(EU ) )示范条款(Model Clauses)、美国-欧盟安全港(U.S.–EU Safe Harbor)框架、家庭教育权利(Family Educational Rights)和隐私法案(Privacy Act)( FERPA ) 以及加拿大个人信息保护(Canadian Personal Information Protection)和电子文件法案(Electronic Documents Act)( PIPEDA))，仅举几例。
第三个神话(The third myth)。您必须将所有内容移至云端。简而言之，这是一个全有或全无的情况。不对！云(Cloud)让您可以完全控制交付业务所需的计算能力和功能。
第四个神话(The fourth myth)。云(Cloud)成本工作。不对！云(Cloud)计算没有抢走工作岗位，而是创造了工作岗位。
最后(Lastly)，许多人认为政府可以访问云中的所有数据。这是许多企业对云计算的主要担忧，因此阻止了他们采用这项技术。这是没有根据的！为什么？只有供应商 IT 团队负责管理访问、设置权限和限制以及提供智能手机访问和选项。公司仍然是唯一所有者，并保留存储在云中的数据的所有权利、所有权和利益。此外，这些数据不会用于任何类型的广告或用于为您提供您已付费的服务以外的任何目的。
这里有很多关于云的帖子，你想看看。(There are a bunch of posts here about the Cloud that you want to take a look at.)
这些帖子讨论了一些最好的云计算服务(best cloud computing services)和免费的云存储提供商。
这些链接也会让您感兴趣：(These links will also interest you:)
- 云服务和微软云的类型
- 公共云与私有云(Public Cloud vs Private Cloud)
- 混合云(Hybrid Clouds)
- 关于云计算的事实
- 云计算工作(Cloud Computing Jobs)
- 云计算的未来
- 云计算的安全问题
- 云计算和网格计算的区别(Difference between Cloud computing and Grid computing)。
What is Cloud and Cloud Computing? An introduction for beginners!
We all hear the word Cloud nоw and then but I, am sure many of us аren’t exactly very sure about Cloud and Cloud Computing. So first of all, it is important to understand, what is the cloud.
What is Cloud?
Cloud is just a metaphor for the internet when we say cloud, we are just referring to the internet only and simply the services we use using the internet – through our web browsers. Now when I say Cloud Computing, then there is no standard industry definition which talks about cloud computing, given the fact that this is in a nascent stage and the only handful of companies are investing in cloud computing & virtualization which are often cited as the FUTURE TRENDS.
What is Cloud Computing?
But, in simple words,”
Cloud Computing is more than the few internet-based services which we access through our web browsers, it is the fundamental shift from the traditional client/server or n-tier architecture, and it primarily focuses on the effective utilization of the IT INFRASTRUCTURE “.
Most Cloud Service providers offer this service on the “pay as you go” model. By “pay as you go” model it means that you pay only for the services you use and a number of the resources you use. You are billed for only those services & resources that you consumed. In short, everything that is offered is actually a service that you use.
You must be thinking it’s just another computational model, so why should one have an interest in it? Well here is the answer to it! Let me brief you with the features of it, and I am sure you will agree that it is a next-generation model.
Features are as follows:
- Scalable: These are highly scalable services than the traditional services that tend to reach a limit at a certain level, but these are designed and managed to cater to the needs of people around the world because these services are replicated at the data centers which have a very good geo-distribution.
- Automated Services Management: Well, it simply means you don’t have to worry about the manpower, servers, software upgrades, hardware, etc. all are managed by the cloud services offering company. I will elaborate this in a future post on Windows Azure.
- High Availability: These have almost 99.9999% uptime services because they have thousands of data centers across the globe and they have hundreds of instances which are replicated on them, so even if one server fails other jumps in to serve the client.
- Multi-tenancy: One Cloud – many tenants, that is the way most Cloud service providers, effectively utilize underlying IT infrastructure. They have many clients whose services are running on a single data center.
- Virtualization: It actually is the most important aspect of it. Cloud service providers have data centers where they run thousands of servers virtually using a hypervisor which increases the effective utilization of the resources of a mere 40-45% to around 85%.
So what it actually does, is that it takes all the stress of managing your servers, databases, security patches, software upgrades, infrastructure, etc. ( in the case of public cloud) from you.
Some common Myths about moving Businesses to Cloud Service
For any small and medium-sized businesses to be successful, it is essential to incorporate certain traits like business agility, flexibility, and the ability to save extra costs. All this, and others can come by moving to Cloud Technology but the bewildering amount of contradictory information floating around on the Internet stop us from making the right move. Knowing the facts can certainly help to bust cloud myths and dispel wrong notions that we might think are true.
Cloud computing myths
The first myth. If our data moves to the cloud, our business will no longer have control over our technology. Here’s what you need to know! When you move to the cloud, time spent in maintaining hardware and upgrading software is significantly reduced. How? The capital budget spent on maintaining servers on-premises for email storage and workloads is greatly reduced. So, rather than spending large portions of resources on servers, you can think strategically to support your business needs in a more prudent manner. This will help you spend more time and energy in improving business operations and launching agile initiatives.
The second myth. Keeping data on-premises is safer than in the cloud. True? Certainly not! Your on-premises systems aren’t inherently more secure than they’d be in the cloud. Security experts say there’s a rising trend seen in cyber theft problem. Many companies are routinely hacked so security has grown into a full-time job as it requires a team of experts to thwart security breaches. Fortunately, some of the companies offering cloud services like Microsoft hires the best and brightest in this business. Its team uses processes such as the Security Development Lifecycle; traffic throttling; and preventing, detecting, and mitigating breaches that many companies don’t have the resources to ensure.
Apart from this, Office 365 also has a 99.9 percent financially backed uptime guarantee and keeps itself up to date with the latest regulations and rules: HIPAA and Sarbanes-Oxley, Federal Information Security Management Act (FISMA), ISO 27001, European Union (EU) Model Clauses, U.S.–EU Safe Harbor framework, Family Educational Rights and Privacy Act (FERPA), and the Canadian Personal Information Protection and Electronic Documents Act (PIPEDA), to name a few.
The third myth. You have to move everything to the cloud. In short, it is an all-or-nothing scenario. Not true! Cloud gives you complete control for delivering the computing power and capabilities that your business necessarily demands.
The fourth myth. Cloud costs jobs. Not true! Instead of taking jobs, Cloud computing has created jobs.
Lastly, many believe governments get access to all the data if it is in the cloud. This is a major fear many businesses have about the cloud and thus stops them from adopting this technology. It’s unfounded! Why? It is just the vendor IT team that manages access, sets up rights and restrictions, and provides smartphone access and options. The company remains the sole owner and retains all the rights, title, and interest in the data stored in the cloud. Moreover, the data is not used for any sort of advertising or for any purpose other than providing you services that you have paid for.
There are a bunch of posts here about the Cloud that you want to take a look at.
These posts talk of some of the best cloud computing services and free Cloud Storage Providers.
These links will also interest you:
- Types of Cloud services & Microsoft Cloud
- Public Cloud vs Private Cloud
- Hybrid Clouds
- Fact about cloud computing
- Cloud Computing Jobs
- The Future Of Cloud Computing
- Security issues with Cloud computing
- Difference between Cloud computing and Grid computing.
