The corporate hosting component of the global IT industry has met with a turning point, viz. cloud hosting. It is a virtualized website hosting system where any number of servers can be linked to each other, irrespective of their location, as the connections are made in cyberspace. The users can add or remove servers depending upon the requirements of the website, and the resources of all the servers are utilized by pooling all of them together, thereby making the service more effective and helpful, compared to shared and dedicated server hosting.

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Mr. Raj Vrach, CTO of i2k2 Networks, said that “we have seen the demand for managed private Clouds increase exponentially in 2010. With Abiquo’s Cloud management platform, we can sell and implement managed private Clouds to large enterprise customers quickly, while leveraging our existing infrastructure and billing system.”  Further he added that “we believe that many enterprises will eventually move to a managed hybrid cloud model and Abiquo will enable i2k2 Networks customers to make that transition seamlessly.” i2k2 Networks’ panoptic knowledge and capabilities assure its clients with high class and cost-effective industry solutions.

Visit the site for more information www.i2k2.com

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i2k2 Networks is considered the leader in Cloud/Enterprise hosting to small medium and large organizations and are managing the most critical infrastructures and applications of leading organizations around the world.  The services are affordable as well as reliable. Though the servers perform a number of tasks at the same time, they are highly synchronized and are therefore also termed as clustered hosting. Cloud hosting is also very cost effective since the customer has to pay only for the power and space he uses. This sort of hosting is very beneficial for upcoming new businesses as they can save on monthly billing and can quickly add or subtract resources without moving to a new server. They can also avoid the losses of a crashed site.
Since there are different servers used, cloud hosting can help download various softwares and hardwares at the same time, saving both time and money. Moreover different servers can support different codes, therefore customer can have both .PHP and .ASP files together. All of these advantages are not possible with the traditional hosting methods. Numerous such notable benefits have made cloud hosting a popular choice amongst small to medium sized companies for their web hosting needs.

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Best security practices permeate all aspect of system design, implementation as well as deployment. All applications must be secure with interfaces that present only relevant data to those users who are authorized. You must take care to avoid coding practices during implementation that could result in vulnerability to techniques like SQL injection or buffer overflow. During deployment operating systems should be hardened and each layer of software should be up to date with the latest security patches.

In cloud computing, applications are deployed in a shared network environment and to protect and segment many layers of application deployment architecture and isolating customers from each other, some straightforward security techniques like port filtering and VLANs are used. Some good approaches to network security are:

•    To group all virtual machines together, and then to control access to the domain through the cloud provider’s port filtering capabilities, you can use security domains. For example: create a security domain for front-end Web servers, open only the HTTP/HTTPS ports to the outside world, and filter traffic from the Web server security domain to the one that containing back-end databases.

•    Use cloud provider’s port-based filtering to control traffic or you can utilize more packet filtering where appropriate by interposing firewall appliances or content switches. Immutable Service Containers (ISCs) concept allow various multiple layers of software to be deployed in a single virtual machine for more fine-grained control over traffic, with pre-plumbed networking that is kept internal to the virtual machine. This technology uses Solaris Zones to support various secure multiple virtual environments on a shared OS platform and it is available with both the OpenSolaris and Solaris Operating Systems.

I hope now you can easily secure your network from external world.

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The three basic service models to consider are: Public, private, and hybrid clouds

Public clouds

Public clouds are mostly hosted away from customer premises. These clouds are access by third parties and applications are mixed together from different customers on the d networks and storage systems, cloud’s servers. They help to reduce cost and customer risk by providing a flexible extension to enterprise infrastructure.

The existence of other applications that are running in the cloud should be transparent to both end users and cloud architects, if a public cloud is implemented with data locality, security and performance in mind.

The benefits of Public clouds are:

• They can be much larger than a company’s private cloud might be
• Offering the ability to scale up and down on demand
• Shifting infrastructure risks from the enterprise to the cloud provider

Private clouds

Private clouds are providing the control over quality of service, security and data, built for the use of one client. These clouds may be deployed in an enterprise datacenter and may also be deployed at a collocation facility.

Private clouds can be managed and built by a cloud provider or by a company’s own IT organization. In the “hosted private” model, a company can operate, configure and install the infrastructure to support a private cloud within a company’s enterprise datacenter.

The benefits of Private clouds are:

• The model gives companies a high level of control over the use of cloud resources.

Hybrid clouds

Hybrid clouds are a combination of both public and private cloud models. They help to provide on-demand, externally provisioned scale. A private cloud with the resources of a public cloud can be used to maintain service levels in the rapid workload fluctuations. A hybrid cloud also can be used to handle planned workload spikes. It is also called “surge computing,” a public cloud can be used to perform tasks that can be deployed easily on a public cloud.

Hybrid clouds determine how to distribute applications across both a private and public cloud. If the application is stateless or the data is small, a hybrid cloud can be much more successful than if large amounts of data transferred into a public cloud for a small amount of processing.

So, these are the basic service models and rest of the models we will discuss later.

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Step 1: First you should decide which technology will be the basis for your on-demand application infrastructure.

The decision related to which virtualization technology will be the organizational standard is already made. But decide before you start if it has not made. There are cons and pros to both a homogenous and heterogeneous virtualization infrastructure and the decision will impact the ability to monitor and manage infrastructure later. So make this decision first.

Step 2: Determine what delivery infrastructure you will used to abstract the application infrastructure.

Cloud infrastructure’s the on-demand capabilities are first designed to do two things: make efficient use of resources and ensure scalability. Some method of load balancing/application delivery will be necessary to accomplish the former.

To abstract the applications, this layer of the architecture will helpful and will provide a consistent means of access to users, shielding them from the high rate of change which occurs in the infrastructure.

The delivery infrastructure or load balancer will need to be included in the provisioning process and to provide visibility into application capacity, performance as well as resource management.

Many solutions are there to match you choice, but select one solution in which you will integrate the system into the architecture. Also you need to verify the solution that whether it is capable of providing the visibility you will need into performance metrics or not. So, decide what metrics and thresholds you’ll use to trigger provisioning processes and ensure that the infrastructure can support it.

Step 3: Prepare the network infrastructure.

Prepare the network to deal with an on-demand application infrastructure. Application delivery: must be configured correctly for the application being deployed, Hardware: network, storage. The network must be configured to deal with such change without requiring human intervention and must be able to handle applications which migrate from hardware to hardware. For this, the network will require constant optimization to adapt to changing traffic patterns.

Step 4: Provide visibility and automation of management tasks.

Remember, visibility is a key to an on-demand infrastructure. An associated management systems and the infrastructure must know what is running, when and where to evaluate available resources. Find how you will collect the data and from where. Decide which system is authoritative for each metric and verify to feed that information in real-time to the automation system.

Step 5: Integrate all the moving parts, such that the infrastructure and realizes the benefits of automation, abstraction and resource sharing.

The last one is most difficult part, and requires the previous steps be completed. The integration, automation of all the pieces of the infrastructure like storage, network, and application enables the infrastructure to act on-demand. The realization of cost-reduction benefits will be marginalized without automation.

The integration step automates workflow. Automation requires constant monitoring across the application infrastructure from the network layer to the applications executing in the environment.

In many cases this integration may require a custom solution. if you are an early adopter it may be necessary to build management system and an automation framework yourself.

Toward a cloud infrastructure, Virtualization is the first step. It is important to re-evaluate the suitability of each critical layer of the architecture for inclusion in the new infrastructure model.

An investment will require for Building cloud infrastructure, if not in solutions or hardware then in time and effort. Automation, Reconfiguration and Integration will require significant IT resources to accomplish.

Now, we are sure that you are able to build a cloud infrastructure by following all these Steps.

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Cloud computing is divided into three segments:

• Applications
• Platforms
• Infrastructure

Infrastructure, the final segment in cloud computing is the backbone of the entire concept. It provides the physical storage space and processing capabilities. The products in this segment are more varied than other areas of cloud computing. But they include development environments (like Google gears) and managed hosting that allows users to build applications. Cloud storage like Amazon’s S3 is also a part of the infrastructure segment.

There are some companies those who are Major Infrastructure Vendors means they that provide infrastructure services:

• International Business Machines (IBM) – Managed hosting
• Google (GOOG) – Managed hosting, development environment
• SAVVIS (SVVS) – Managed hosting
• Amazon.com (AMZN) – Cloud storage
• Terre mark Worldwide (TMRK) – Managed hosting

There are two methodologies for constructing Infrastructure-as-a-Service (IaaS) AKA “Cloud Infrastructure Services”. The first is “cloud centers” that are data centers in the sky. The second is “Infrastructure Web Service”. These two approaches directly affect your selection of a Cloud Infrastructure provider. These two models highlight a difference in target markets and in core infrastructure. Cloud centers provide a direct equivalent to traditional datacenters and hence are usually more desirable for IT staff, systems operators, and other datacenter savvy folks.

On the other hand, Infrastructure Web Services are more analogous to Service-Oriented-Architectures (SOA) which require significant programming skills and much more comfortable for software developers. Infrastructure Web Services provides different Web Services that can consumed individually or put together to support different kinds of applications, a batch processing or web application of some kind.

These services include:

• Servers on demand via Elastic Compute Cloud (EC2)
• Object-based file storage via Simple Storage Service (S3)
• Block storage on demand via Elastic Block Storage (a part of EC2)
• Content distribution and edge-caching via Cloud Front
• Distributed database functionality via Simple DB (SDB)
• Messaging & queuing via Simple Queuing Service (SQS)
• Billing & re-packaging of the above services via Amazon Dev Pay
• Payment processing via Flexible Payment Services (FPS)

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