Dan C. Marinescu is the author of Cloud Computing: Theory and Practice. He was a Professor of Computer Science at Purdue University in West Lafayette, Indiana from 1984 till 2001 when he joined the Computer Science Department at the University of Central Florida.
In this interview, Marinescu outlines a variety of interesting facts about cloud security, illustrates how the cloud has shaped enterprise security, and provides insight into key future trends.
Computer clouds have been credited with making the workplace more efficient and giving consumers anytime-anywhere access to emails, photos, documents and music as well as helping companies crunch through masses of data to gain business intelligence.
Now it looks like the cloud might help cure cancer too.
The National Cancer Institute plans to sponsor three pilot computer clouds filled with genomic cancer information that researchers across the country will be able to access remotely and mine for information.
Posted by admin
on January 26, 2011
in Cloud Hosting
, Cloud Servers
Cloud computing is the result of technology’s rapid evolution. Cloud can be offered in two types: The Private Cloud and the Public Cloud. Cloud offering as a service over the Internet is known as the Public Cloud. A Private Cloud is cloud deployment where the business IT team manages the cloud. To choose between a public cloud and private cloud, it is important to understand the differences between the two. The following outlines the differences between a Public Cloud and Private Cloud.
With a public cloud, users are normally charged on a monthly basis. Users pay for the usage per Gb. It is based on the on-demand storage scalability. The hosting provider has the responsibility of managing the infrastructure and pool of resources. Users are not required to buy hardware or software. With a public cloud, back-up on a single laptop or deploying an application is quite simple. As users need increase, they have the ability to lease more capacity and there is linear cost scaling. The length of time to store user data may affect the selection of a public cloud, particularly for businesses that have a high quantity of data. The longer the data stays on the public cloud the more increase in costs.
Since public cloud is accessed via the Internet, there is a limitation to accessibility. As well, because there is bandwidth limitations associated with the Cloud, problems with sufficient bandwidth could be a potential problem. It is helpful to select the appropriate bandwidth resources to avoid any problems.
Private clouds are licensed like businesses. They are deployed and accessed over the Ethernet LAN at high speed. It is quite easy to deploy the cloud architecture. The Private cloud is created using cloud software operating on a hardware that has been provided by the cloud hosting company. Users can download the software and the private cloud can be up and running within an hour. Storage is completely controlled and retained by the client and not shared with anyone else. Private cloud allows for high scalability which permits users to make additions of servers to the current architecture that is completely managed by the users. The duration of time for data storage is very fast and each node addition boosts performance. Replication of files to multiple nodes gives each node the ability to serve independent requests. Private clouds can be built at a budget-friendly cost.
Choosing between the Public Cloud and Private Cloud involves having a general understanding of your data requirements and usage. The more data and usage you require, the more likely you will need a Private Cloud.