INSUBCONTINENT EXCLUSIVE:
Cloud computing gets divided into three types: public, private, and hybrid; the last being a mix between the first two types
While a public cloud connects to multiple users through the internet, a private cloud is restricted to only select users, such as a
The private cloud can be located directly on premise directly on the internal network, or at an off premises company owned and managed data
Private cloud also gets known by the names corporate cloud, and internal cloud.Virtual private cloudA variation of the private cloud is the
virtual private cloud (VPC)
However, unlike a public cloud that serves multiple organizations, the VPC remains dedicated to a single organization.An example of a VPC is
the Amazon Virtual Private Cloud, a service of Amazon Web Services, which allows a Hardware Virtual Private Network connection from the AWS
Such a solution can be a good intermediate step offering the features of a private cloud, while letting a vendor handle the heavy lifting of
look at the advantages of a private cloud setup:Security - With a private cloud setup dedicated to a single client, security is inherently
higher than in a public cloud situation that has multiple users.Control - The organization gains total control over the access to the
server, and the data stored on it.Performance - With a private cloud, with the hardware on-premise, and therefore behind the firewall,
can be upgraded as needed, such as RAM and hard drives to optimize performance, and more resource intensive apps can be specified to run on
the newer gear.Management - With a public cloud, the cloud provider is the top manager, but in a private cloud environment the IT
administrator for the organization retains this.Disadvantages of private cloudThere are also some disadvantages to the private cloud
One is that the startup costs for hardware acquisition are quite a bit higher than a public cloud
It can also be hard to budget for, as it is not always simple to plan out hardware failures.The costs for maintenance, and that it is done
cost effectively, also fall on the IT department, causing them to turn to public cloud solutions with their more predictable monthly costs
justified, as uptime can be more highly optimized with redundant hardware.With a private cloud solution it can be a challenge to plan out
If it is overbuilt, it will be underutilized, and therefore money is wasted on resources that are not necessary
If the private cloud is underpowered, than it will not be up to the task, and not able to meet times of higher demand, although this has
prompted some organizations to enable cloud bursting, as detailed above.A final downside is that as the private cloud is located on the
corporate LAN, there can be difficulties accessing it from outside the network, while maintaining a high level of security.With the
downsides of acquiring, deploying, and maintaining, a private cloud solution, it has come under criticism as public clouds offer economies
of scale from companies that offer their expertise in this increasingly complex area
After all, public cloud offers resources on demand, at affordable prices
However, not all applications, often due to security and compliance with regulations, are amenable to a public cloud approach, necessitating
a private cloud environment as the organization needs to maintain control over their sensitive data.Private cloud softwareTo build out a
private cloud requires software
There are plenty of choices from vendors, such as Microsoft Azure, VMWare vCloud, and the Amazon Virtual Private Cloud, each offering an
array of services, including private clouds, virtual private clouds, and the ability to connect to a public cloud provider to implement a
Programs To Useful Systems and is open-source software that provides solutions for IaaS methodology
This grew out of a research project at the University of California, Santa Barbara, which then transitioned to the business Eucalyptus
Systems in 2009.Subsequently they decided to work with Amazon Web Services in 2012, to allow users to join their Eucalyptus private cloud to
the Amazon Elastic Compute Cloud (EC2) for implementation of a hybrid cloud setup
has been their wide support across both Windows and Linux virtual machines, accounting reports for administrators, the ability to virtualize
multiple clusters into a single cloud, secure internal communication via WS-Security between internal resources, and compatibility with
popular hypervisors, including VMWare and KVM.It continues to be a robust software platform, with an advanced feature set such as CloudWatch
that can collect and study metrics to spot trends, and even provide alerts, Auto Scaling that can increase the resources as needed to match
the workload, and scale them back when not needed, and granular reporting that can report the cloud utilization down to the cloud
application by each user.While private cloud only environments are giving way to hybrid cloud architecture, incorporating the innate
advantages that the public cloud offers, they continue to be an important component to include for organizations seeking the most robust
