Oct

vSphere: Virtualization From the Clouds

Cloud Computing today is very reminiscent to the real natural situation. We live on land with long-established IT infrastructure. And in the sky above us there is a cloud, which offer many benefits (which we confidently assure suppliers). But how to get up there, to enjoy all these benefits is not very clear. And it is not clear what to do with established infrastructure in the land: to pull it in some way to heaven or to leave where there is.

Indeed: as in practice to shift to Cloud, What approaches can be applied here ? The revolutionary (to tear down the old are not required, but the clouds is just a new move, specially made for them) or evolutionary (gradually moving back everything that is used today)? IT vendors give different answers to these questions, each with its own view of business strategy and existing portfolio of offerings. We dare say that most robust and versatile version of the company now offers a VMware.

It is worth recalling that the intention to develop its technology is towards the realization of the cloud concept is widely VMware announced in September last year. Since then, the word Cloud was constantly present in the company’s corporate materials. VMware representatives are almost exclusively conducted in the subject of virtualization. And it was clear: the domestic enterprises are, by and large, still only the first stage of development of these resources (phase of server consolidation). In this situation, “Cloud gave” a not very clear advantages, and most importantly – with an unknown road traffic to them could only confuse the audience.

But now, apparently, it’s time to start promoting the ideas of cloud in India. Even from the most superficial analysis of publications shows that the term “cloud” and “virtualization” relates closely related. But still need to keep in mind that these are two qualitatively different concepts: the first belongs to the category of the concept (the methodological approach to IT infrastructure) and the second – a particular technology, implementing specific IT projects in practice. It should be stressed that virtualization – this is not the only way of formation of cloud systems. In today’s theoretical understanding the prospects of Cloud Hosting is associated with the transition to the use in applications architecture (multitenancy), which actually requires a fairly radical alteration of the application software being used today, based on the model of “each holder of – your own copy of the program.”

The use of virtualization allows you to make the evolutionary transition from traditional circuit implementation of IT infrastructure (within the enterprise) to the Cloud by creating a environment-based model that is based on common hardware “(shared hardware multitenancy), when the tenants have their own copies of the application that while working in a common technical infrastructure. Fundamentally with the fact that the existing applications in this virtual environment are functioning without any of their changes.

But at the same time it is important to note that virtualization – is not just a way to use legacy software in solving the problem of building a more efficient IT infrastructure. The question of what kind of market share in the future will be cloudy model is open, but we can confidently say that about any 100% can not be considered. Likewise, you can ensure that a full transition of software developers use software architecture that does not happen even in the distant future. And if so, then it will be a key virtualization technology implementation of cloud model for applications.

The overall logic of the movement of customers in the virtual cloud is quite obvious and is implemented in two stages: first, the consolidation of hardware resources is performed by replacing physical servers to virtual, and then made the transition from virtual servers to the dynamic virtual IT infrastructure. Actually that’s the system, formed in the second stage, is already quite possible to consider the cloud: virtualization layer separating the application software from the physical environment, virtual machines can be moved in the hardware space, including external cloud (although, of course, everything is not so simple because you need to solve many issues, not so much technical as organizational and legal).

But the fact is that, the second stage of (which has fully implemented the system of vSphere 4) VMware is not going to stop.

In the context of this approach, it becomes clear that the VMware is one of the most promising players on the field of cloud application server.

The general approach to the construction of “happy cloud” is clear, and it must be said that VMware already has a representative set of technologies and solutions for implementing these ideas.

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