In some aspects of cloud servers to work in the same way as physical servers but the functions they provide can be very different. When opting for cloud hosting, clients are hiring virtual server space rather than renting or buying physical servers. They are usually paid by the hour, depending on the capacity needed at any particular time. Traditionally there are two main options for storage: shared hosting and dedicated hosting. Shared hosting is the cheaper option so that the server is shared between the customer's hosting provider. a customer site will be hosted on the same server as the website belonging to other clients. This has several disadvantages, including the fact that these settings are not flexible and can not cope with a large amount of traffic. Dedicated hosting is a more advanced form of storage, whereby customers buy the entire physical server. This means that the entire server is dedicated to different customers they do not have to share it. In some cases, customers can use multiple servers are all dedicated to their use. Dedicated servers allow full control over storage. The downside is that the necessary capacity to be expected, with sufficient resources and processing power to cope with the expected traffic levels. If this is underestimated then it can lead to a lack of resources needed in busy periods, while overestimating it would mean paying for unnecessary capacity. With cloud hosting customers get the best of both worlds. Resources can be expanded or shrunk to fit, make it more flexible and, therefore, cost-effective. When multiple demands placed on the server, the capacity can be automatically increased to fit the needs do not have this need to be paid on a permanent basis. This is like a heating bills; you access what you need, when you need it, and then only pay for what you used later. Unlike dedicated servers, cloud servers can be run on a hypervisor. The role of a hypervisor is to control the capacity of the operating system so it is allocated where needed. With more cloud storage cloud server which is available for each specific customer. This allows computing resources to be dedicated to a particular client if and when it is needed. Where there is a spike in traffic, additional capacity will be temporarily access a website, for example, until it is no longer necessary. cloud servers also provide more redundancy. If a server fails, others will take its place. Here are the key benefits of cloud server: Flexibility and scalability; additional resources can be accessed when necessary cost effectiveness; while it is available when needed, customers pay only for what they are used at a specific time Easy to set up; cloud servers do not require a lot of initial setup reliability; due to the number of servers available, if there are problems with some people, resources will be transferred to customers are not affected.
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