Comparison between Public Cloud, Private Cloud and Hybrid Cloud
In risk management, public cloud computing is a representation of essential change in leading model of provisioning information technology, alteration of responsibility distribution for information as well as the safety. Rather maintaining data on servers and systems as well as networks located in companies, premises and organizations request public cloud service providers that host information technology resources and manage deliver applications and data to Smartphones, tablets and PC’s when the need arises. Such model helps enhance the safety of information to end users.
Private cloud refers to information infrastructure that helps keep and manage computer programs and data for small businesses. The computing model offers better flexibility as well as security control and accommodates more modification in comparison to public cloud. The related risks to private cloud are also familiar to those faced by majority of companies, as such, having the right co-worker, the risk becomes alleviated.
Hybrid cloud refers to where part of the cloud can be shared, for example, one can store and manage applications and data in a hybrid cloud, though they share a public network with other organizations. In such a case, hybrid cloud is better than other cloud models since it provides a private network and dedicated cloud communications. This also increases flexibility and control along with reliable security management, while decreasing costs benefit hybrid cloud (Eisenberg 46).
In the public cloud, the internet provided can be used to backup services and make storage if it is available. The model provides on-demand solution whereby uses choose to store data in the cloud as such, resources of an off-site third party provider is often in control of such a model. Usually, the users can access scalability and reliability that of data already installed by the provider of the cloud without the need for building anything in-house.
In the private world of cloud computing, the backup services are controlled and possessed by the company rather than the provider of the cloud. In this instance, the company enjoys full control over the backup resources available. Normally, it is suited for businesses with restrictions and which do not allow backup services on public offering. The department of internal information technology installs, test and is able to fix a backup centre.
In hybrid cloud, the organization can choose to carry on using data that is available to protect their network. As such, the model permits companies to assume full advantage of other model’s ease of access as well as backup management. It also offers a means to address some of the constraints that are related to public cloud model and gain numerous benefits of public cloud in the management of backup.
In public cloud model, the information technology managers have far less power in terms of things like storage performance and hardware decisions making it difficult to offer maximum security to the information and data of an organization. The virtual servers of an organization are located on the network systems of service provider or in another provider which poses risk to its applications and data. On top of this, the model’s network security also provider’s security management practices that are cheaper since the cost is shared among several companies compared to hybrid and private models.
In a private cloud model, the network is intended to offer strong protection directed towards one company in order to manage and safeguard data accessibility, hardware and network systems found in big data centres. However, when compared to other computing models, private cloud is not able to meet industry specific compliance regulations. Normally, it is said to experience high security risks leading numerous companies to stop using public cloud models in numerous instances.
The hybrid cloud model therefore is controlled in a manner that is similar as a private cloud model with the businesses retaining a large percentage of security on the infrastructure. In the model, the user must keep a record of multiple different security systems and ensure that every aspect of the business is kept in communication with each other. In the model, the security management is quite cost effective since safety is offered to the particular organization that owns the cloud.
A model of public cloud computing offers no or little privacy for the user’s data and their information. Once users’ data gets into the model, it has the capability of circulating through thousands of systems available all over the world. Actually, this is frightening for users running applications, which need high private data such as financial information or corporate intelligence.
The private cloud computing, was majorly created so it could offer maximum privacy to its user’s data and information. It is a computing infrastructure that is privately owned by the company; as such, it is absolutely internal offering greater total privacy to the user’s applications and data than in the public cloud model where the information is open to all.
Hybrid cloud, offers different needs regarding computational resources in terms of non-sensitivity and sensitivity. In such a case, database servers are used for purposes of storing private and sensitive information, which can never be accessed by unauthorized users, while information that does not need privacy is kept where everyone can easily access it. As such, this computing model helps solve issues of privacy associated with public cloud and also makes it possible for the business to take advantage of everything the public cloud model offers in terms of general computing resources that do not require privacy.
The public cloud offers users recovery management resources without large expenses of having to operate or own them for themselves. Because recovery management tool is looked upon as too costly, unreliable and complex, companies pay on per use basis or contract subscription in the computing model. In such instances, recovery management is cost effective since the off-site recovery infrastructure is communal in majority of companies. However, the process of recovery in the model is time consuming and does not guarantee recoveries 100% since the cloud providers often lack the hardware and software configurations that are identical to what specific company uses on its main site.
In private cloud model, normally, the infrastructure is dedicated to one company; as such, the recovery management takes far less time to recover when compared to recovery in public models since the configuration of disaster recovery tools is done already and the IT infrastructure is duplicated on the site of recovery management and is available always in case of recovery. The process of recovery the other hand is quite expensive compared to public cloud since the hardware and software involved, stays idle for the longest time when it is not used for purposes of disaster recovery (Foran 34).
In hybrid cloud model, it offers a couple of different significance since it comes with recovery management planning. Disaster recovery is made less expensive and it also improves agility and flexibility of the recovery management considerably. This is since when a disaster is declared, the operating system, application software as well as hardware at the site is configured already to match the IT site, as such, no time is ever wasted. Additionally, less duration is taken in the course of data restoration after the recovery is completed. (Knudson 23).
Eisenberg Mark. Public, private and hybrid computing clouds. 2012. Web. 4 March, 2014.
Foran Joseph. Managing cloud based disaster recover. 2011. Web. 4 March, 2014.
Knudson Julie. Hybrid cloud disaster recovery best practices. 2013. Web. 4 March, 2014.