Cloud Computing Concepts:
A private cloud is a particular model of cloud
computing that involves a distinct and secure
cloud based environment in which only the specified client can operate.
The Private Cloud allows systems and services to
be accessible within an organization. The Private Cloud is operated only within
a single organization. However, it
may be managed internally or by third-party.
As with other cloud models, private clouds will
provide computing power as a service within a virtualized environment using an
underlying pool of physical computing resource. However, under the private
cloud model, the cloud (the pool of resource) is only accessible by a single organization providing that
organization with greater control and
Traits that characterize private clouds include
the ring fencing of a cloud for the sole use of one organization and higher levels of network security.
Private cloud services draw their resource from
a distinct pool of physical computers but these may be hosted internally or
externally and may be accessed across private leased lines or secure encrypted
connections via public networks.
The private cloud model is closer to the more
traditional model of individual local access networks (LANs) used in the past
by enterprise but with the added advantages of virtualization.
The additional security offered by the ring
fenced cloud model is ideal for any organization, including enterprise that
needs to store and process private data
or carry out sensitive tasks.
Features and Benefits of Private Cloud:
Cost and Energy
efficient: Private cloud resources are not efficient as public cloud but
they offer more efficiency than public cloud as they minimize the investment
into unused capacity.
Higher security and
Privacy: Private cloud operations are not available to general public and
resources are shared from distinct pool of resources, therefore, ensures high
security and privacy.
Private cloud has more control on its resources and hardware than public cloud
because it is accessed on within an organization.
Cloud Busting: This
service allows the provider to switch certain non-sensitive functions to a
public cloud to free up more space in the private cloud for the sensitive
functions that require it. Private clouds can even be integrated with public cloud services to form hybrid clouds where non-sensitive
functions are always allocated to the public cloud to maximize the efficiencies
Even where resources (servers, networks etc.) are hosted internally, the
creation of virtualized operating environments means that the network is more
resilient to individual failures across the physical infrastructure.
Private cloud can be scaled only within capacity of internal hosted resources.
Private cloud is only accessible locally and is very difficult to deploy
In order to fulfill demand, purchasing new hardware is very costly.
In order to maintain cloud deployment, organization requires more skilled and