CLOUD COMPUTING

You might be trapped with this word Cloud Computing..!! and always thinking, What is this ?

And why its called to be an futuristic ??

EVEN One of my friend [ARUN DUBEY] asked me about this so i thought its better to share this post to every one....

 Here is your Answer.....

Introduction :

Competitive business environments are putting pressure on IT managers to accomplish more each year withreduced budgets. With the need or exibility, competitive edge, and aster time to market, IT organizations must find new solutions that are more efcient and more cost-eective than their past or current solutions.The original data center started as a private serverroom hosted within the organization’s acility contain-ing many individual servers running single applica-tions. In the early days o data centers, most organi-zations were responsible or maintaining the server sand sotware, and required a number o personnel resources to manage the servers as well as the acility.While some larger organizations continue to manageinternal data center, many business managers are ableto increase service levels, cover more users, and lowerresponse times by outsourcing their out-dated serverarms to third-party data centers and cloud comput-ing providers. These third-party data center providersare better equipped to maintain and update server equipment. [Created to provide information by Santosh Sah.]

This white center paper ll define data centers and explore cloud networking.

What is Data center ?

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A data center or computer centre (also datacenter) is a facility used to house computer systems and associated components, such as telecommunications and storage systems. It generally includes redundant or backup power supplies, redundant data communications connections, environmental controls (e.g., air conditioning, fire suppression) and security devices.

A data center (sometimes called a server arm) is acentralized repository or the storage, management,and dissemination o data and inormation. Typically,a data center is a acility used to house computersystems and associated components, such as telecom-munications and storage systems.

Cloud computing ::

The term "Cloud Computing" was inspired by the cloud symbol that is often used to represent the Internet in ow charts and diagrams.

Leveraging third-party computing capability over the network is a good way to cut costs, increase scale, and im-prove agility. The concept o cloud computing involves a data center somewhere in the world, or even multipledata centers scattered around the world. This is a paradigm shit rom the historical client-server architecturewhere the network users owned, maintained, and operated their own network inrastructure, server rooms, dataservers, and applications.Typical cloud computing providers deliver commonbusiness applications online that are accessed romweb browsers, while the sotware and data are stored on the servers or SAN devices. These applica-tions are broadly divided into the ollowing catego-ries: Sotware as a Service (SaaS), Utility Computing,Web Services, Platorm as a Service (PaaS), Man-aged Service Providers (MSP), Service Commerce,and Internet Integration.These data centers are hosting the servers and ap-plications the clients use to operate their business This structure reduces capital expenditures, since by rentingrom a third-party provider to provide the services on a per-use ee the business only pays or the resources used.Some Cloud providers employ a utility computing model,meaning they bill clients like a utility such as an electrical company. Others bill on a subscription basis. In either case,the customer gains the security o a service level agreement(SLA) as well as the saved expense o hiring an IT sta tomaintain a local server arm.There are many resources available in a data center and in the cloud that a client can purchase or rent, such as process-ing time, network bandwidth, disk storage, and memory. [Created by Santosh].Theusers o the cloud do not need to know where the data cen-ter is, or have any expertise on how to operate or maintain the resources in the cloud. Clients only need to know howto connect to the resources and how to use the applications needed to perform their jobs.With cloud-based computing, the applications run on serversin the data center, not the local laptop or desktop computer the user is operating. The user’s computer provides a windowinto the application, but does not actually run the application; in other words, it runs a user interace. This procedurereduces the need or big processing power and memory on the end user’s computer and centralizes it in the data center.

Key benefts o cloud computing:

• Flexibility

– There is the ability to update hardwareand sotware quickly to adhere to customer demandsand updates in technology. 

• Savings

– There is a reduction o capital expendituresand IT personnel.

• Location & Hardware Independence

– Userscan access application rom a web browser connectedanywhere on the internet.

• Multi-tenancy

– Resources and cost are sharedamong many users, allowing overall cost reduction.

• Reliability

– Many cloud providers replicate theirserver environments in multiply data centers aroundthe globe, which accounts or business continuity and disaster recovery.

• Scalability
– Multiply resources load balance peak load capacity and utilization across multiply hard-ware platorms in dierent locations.

• Security
– Centralization o sensitive data improves security by removing data rom the users’ com-puters. Cloud providers also have the sta resources to maintain all the latest security eatures to helpprotect data.
• Maintenance

– Centralized applications are much easier to maintain than their distributed counterparts. All updates and changes are made in one centralized server instead o on each user's computer.

Useful data........ [Details is in high precision adopted by global level. Researched by Santosh Sah.] Cabling Design - Structured cabling system fordata centers using standardized archi-tecture and media • Copper and ber cabling performances• Connectors, cables, distribution hardware• Cabling distancez• Space management Facility Design • Data center sizing• Power distribution methodologies• Pathways and spaces• HVAC, security, operations, and administration Network Design • Support of legacy systems• Enable rapid deployment of new and emerging technologies. Data Center Tiers • Tier 1 – Basic Data Center - 99.671% Availability - No redundancy- Single path or power and cooling distribution- May or may not have a raised oor, UPS, orgenerator- Annual downtime 28.8 hours • Tier 2 – Redundant Components - 99.741% Availability - Redundant components- Single path or power and cooling distribution- Includes raised foors, UPS, and generators- Annual downtime 22.0 hours • Tier 3 – Concurrently Maintainable - 99.982% Availability - Single path or power and cooling distribution- Redundant components- Includes raised oors, UPS and generators - Annual downtime 1.6 hours • Tier 4 – Fault Tolerant - 99.999% Availability - Multiple active power and cooling distributionspaths- Includes raised oors, UPS and generator- Multiple active distribution path.

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Thanking you............

Ur lovely friend

SANTOSH SAH.