Cloud Computing Concepts:
There are several important components which are involved
in cloud computing infrastructure. These components comprises:
Now we are going to see all these components one by one:
Hypervisor is a firmware
or low-level program that acts as a Virtual
machine Manager. It enables us to share the single physical instance of
cloud resources between several tenants.
Management software helps to maintain and configure the
Deployment software helps to deploy and integrate the
application on the cloud
This is the key component of cloud infrastructure. It
allows to connect cloud services over the Internet it is also possible to
deliver network as a utility over the internet, i.e. the consumer can customize
the network route and protocol.
Server helps to compute the resource sharing and offers
other services like resource allocation, and de-allocation, monitoring
resources, security, etc.
Cloud follows distributed file system for storage purpose.
If one of the storage resource fails, then it can be extracted from another one
which make cloud computing more robust and reliable.
There are some fundamental Infrastructural constraints
that a cloud must follow and implement as to build a dynamic and intelligent Infrastructure:
is the key to share resources in cloud environment. But it is not possible to
satisfy the demand with single resource or server. Therefore, there must be
transparency in resources, load balancing and application, so that we can scale
them on demand.
Scaling up an application delivery solution is not that
easy as scaling up an application because it involves configuration overhead or
even re-architecting the network. So, application delivery solution is need to
be scalable which will require the virtual infrastructure such that resources
can be provisioned and de-provisioned easily.
In order to achieve on demand transparency and
scalability, application solution delivery will need to be capable of
intelligent monitoring. It will need to understand when a particular server is
overwhelmed and when network conditions are adversely affecting the application
performance. It need to know the applications and services being served from
the cloud and understand when behavior is outside accepted norms
Cloud computing is somewhat risky if the data coming from
the user is not secured. That means that the mega data center must be
architected with security in mind, and it must be considered a priority for
every application, service and network infrastructure solution that is
deployed. The application delivery solution, as the “control node” in the mega data center, is necessarily one of the
first entry points into the cloud data center and must itself be secure.