Skip to main content

Types of clouds computing

NIST classifies the cloud into four different types. They are:

Private Cloud:

Provisioning of infrastructure for controlled access by a single organisation (or) providing controlled access to restricted data and information for few organisations in a closed network format is referred to as private cloud. All business units within the organisation can access the cloud without having to build their own infrastructure.
An organisation can choose to manage the cloud by itself or take the services of a third party. The third party cloud service provider may host the private cloud within the premises of the organisation or in its data centre. Private cloud deployment is best suited for enterprises looking at a higher level of control and regulatory measures.
The most significant advantage of private cloud is that it offers better and direct control over sensitive data as well as the hardware used. It also enables building the infrastructure with the most reasonably new hardware components. Other significant advantages of a private cloud are easy moving of data into cloud due to better proximity and enhanced security levels.

2. Public Cloud:


A public cloud is one based on the standard cloud computing model, in which a service provider makes resources, such as virtual machines (VMs), applications or storage, available to the general public over the internet. Public cloud services may be free or offered on a pay-per-usage model.

The main benefits of using a public cloud service are:
it reduces the need for organizations to invest in and maintain their own on-premises IT resources;
it enables scalability to meet workload and user demands; and
there are fewer wasted resources because customers only pay for the resources they use.

3. Community Cloud:

A community cloud is a type of cloud primarily used by a closed group of people or organisations. It is a collaborative effort, and the hardware infrastructure is mutually shared by two or more organisations from a specific community. It could either be managed or hosted internally within an organisation in the community or by a third-party cloud service provider. The infrastructure costs are shared among the community members based on mutual agreements. Popular example would be the Virginia Community College System that has implemented a community cloud to provide educational, informational and administrative services to 23 colleges from around 40 campuses.

4. Hybrid Cloud:

As the name implies, a cloud that is a combination of two or more clouds (public cloud, private cloud or community cloud) is called as hybrid cloud. In a hybrid cloud environment, workloads can be moved between private and the public clouds based on changing computing needs and costs. This allows enhanced flexibility and more options when it comes to data deployment. For instance, consider an organisation dealing with a large amount of personal data that wants to move some of its workload to the cloud. In this case, the organisation can use its private cloud to host workloads dealing with sensitive information and the public cloud service for all non-critical applications.

Comments

Post a Comment

thank you for visiting :)

Popular posts from this blog

Special Permissions in linux

The setuid permission on an executable file means that the command will run as the user owning the file, not as the user that ran the command. One example is the passwd command: [student@desktopX ~]$ ls -l /usr/bin/passwd -rw s r-xr-x. 1 root root 35504 Jul 16 2010 /usr/bin/passwd In a long listing, you can spot the setuid permissions by a lowercase s where you would normally expect the x (owner execute permissions) to be. If the owner does not have execute permissions, this will be replaced by an uppercase S . The special permission setgid on a directory means that files created in the directory will inherit their group ownership from the directory, rather than inheriting it from the creating user. This is commonly used on group collaborative directories to automatically change a file from the default private group to the shared group, or if files in a directory should be
Post a Comment
Read more

The Seven-Step Model of Migration

Irrespective of the migration approach adopted, the Seven-step Model of Cloud Migration creates a more rational point of view towards the migration process and offers the ability to imbibe several best practices throughout the journey Step 1: Assess Cloud migration assessments are conducted to understand the complexities in the migration process at the code, design and architectural levels. The investment and the recurring costs are also evaluated along with gauging the tools, test cases, functionalities and other features related to the configuration. Step 2: Isolate The applications to be migrated to the cloud from the internal data center are freed of dependencies pertaining to the environment and the existing system. This step cuts a clearer picture about the complexity of the migration process. Step 3: Map Most organisations hold a detailed mapping of their environment with all the systems and applications. This information can be used to distinguish between the
Post a Comment
Read more

RequestsDependencyWarning: urllib3 (1.24.1) or chardet (3.0.4) doesn't match a supported version

import tweepy /usr/lib/python2.7/dist-packages/requests/__init__.py:80: RequestsDependencyWarning: urllib3 (1.24.1) or chardet (3.0.4) doesn't match a supported version!   RequestsDependencyWarning) Traceback (most recent call last):   File "<stdin>", line 1, in <module>   File "/usr/local/lib/python2.7/dist-packages/tweepy/__init__.py", line 14, in <module>     from tweepy.api import API   File "/usr/local/lib/python2.7/dist-packages/tweepy/api.py", line 12, in <module>     from tweepy.binder import bind_api   File "/usr/local/lib/python2.7/dist-packages/tweepy/binder.py", line 11, in <module>     import requests   File "/usr/lib/python2.7/dist-packages/requests/__init__.py", line 97, in <module>     from . import utils   File "/usr/lib/python2.7/dist-packages/requests/utils.py", line 26, in <module>     from ._internal_utils import to_native_string   File "/usr/lib/python2.
Post a Comment
Read more

tag