Information Technology Reference
In-Depth Information
In this chapter, we will discuss different delivery models
for the cloud as well as their nuances. Just as with any other
service or product, there is no single way to define how a
cloud system delivers its services.
As discussed in previous chapters, what makes a cloud is the capability of the system to
support its user base and provide vast amounts of computing resources at very reasonable
prices. Of course, it has to be scalable and flexible.
Private
The private cloud deployment model is primarily the provisioning of private and unshared IT
infrastructure and resources. If an organization already has some kind of data center set up
in-house, this model will make a lot of sense because there is no additional capital expense
to be rendered and no more installation required, simply reconfiguration of existing infra-
structure. However, this doesn't bring in a lot of benefits in terms of cost efficiency, untapped
scalability, and managed services, but it is highly effective for organizations having higher
security, privacy, and regulatory concerns. A private cloud has two different classifications:
full private cloud and semi-private cloud.
Full Private Cloud Deployment Model
As the name suggestions, a full private cloud is a type of cloud that is owned, deployed,
and managed entirely by a single organization. It provides cloud-like functionality such as
virtual machines, server virtualization, storage virtualization, and software delivery within
an organization. This type of deployment is often more expensive than other deployment
models and is restricted to a specific capacity. However, it also brings with it stronger secu-
rity, privacy, and IT control. Take, for example, a private cloud deployed and used within
a bank and its branches/offices; it provides banking software, computing resources, and
storage just as a cloud would provide but also offers full private benefits such as invisibility
from external sources.
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