The cloud has many benefits, but when it comes to application development, how does the cloud help enterprises and development teams create custom software and applications that end users actually care about? Using real world examples from Adobe, Herff Jones and Navy Federal Credit Union, this session will highlight the advantages cloud computing provides for quickly developing custom software and applications with compelling user experiences.
In their general session at the 10th International ...| By Srinivasan Sundara Rajan | Article Rating: |
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| November 10, 2010 03:19 PM EST | Reads: |
4,489 |
Elastic Compute Cloud
Amazon Elastic Compute Cloud (Amazon EC2) is a web service that enables you to launch and manage Linux/UNIX and Windows server instances in Amazon's data centers.
What makes Amazon EC2 different is that you use only the capacity that you need. This eliminates your need to make large and expensive hardware purchases, reduces the need to forecast traffic, and enables you to immediately deal with changes in requirements or spikes in popularity related to your application or service.
EC2 comes under the category of IaaS (Infrastructure As A Service) and provides a viable option for enterprises to allocate computing resources on demand. Some of the tenants of EC2 that will satisfy the needs of enterprises are :
- Elastic: Amazon EC2 enables you to increase or decrease capacity within minutes, not hours or days.
- Flexible: You have the choice of multiple instance types, operating systems, and software packages.
- Reliable: Amazon EC2 offers a highly reliable environment where replacement instances can be rapidly and predictably commissioned.
- Inexpensive: Amazon EC2 passes on to you the financial benefits of Amazon's scale.
Disaster Recovery Sites For Enterprises & Current Issues
Large enterprises justifiably spend lot of effort and infrastructure cost to set up their disaster recovery sites. These typically range from log shipping or replicating databases to a remote site and recover them and also all the application binaries, and other supporting services are replicated to remote site. Periodic disaster recovery drills have been conducted to ensure that in the event of a disaster to the primary data center the secondary DR site can be commissioned and put into operation.

The issues with the current enterprise Disaster Recovery architectures are :
- The capital and operational expenditure for the Disaster Recovery sites are very high
- The Disaster Recovery Sites are generally sized for the maximum peak capacity and lot of computing cost is wasted for the event with relatively low probability
- If the Disaster Recovery sites are not sized for the full load and if there is a need to switch to disaster recovery site, then this may result in loss of business as the scaled down setup may not scale up for the peak business demands
- If there is a issue with primary site and we switched to the disaster recovery site, till the time the primary site is fixed the business is prone to single point of failure as there will not be no further secondary sites to the disaster recovery sites.
Using EC2 as Viable Disaster Recovery Sites For Enterprises
As evident EC2 apart from a Cloud platform, it also provides several other benefits, that lets the enterprises to setup their Disaster recovery sites to a minimal configuration and grow in case of a need to switch to Disaster Recovery site and then expand further based on business needs.
While this provides cost benefits at the same time the EC2 in itself is fault tolerant so a single point of failure is avoided just in case you need to run your business from the disaster recovery site (EC2) for a while.
There are multiple types of instances that can help in reducing the costs for a disaster recovery site are listed below, an enterprise can arrive at a best model to satisfy the needs.
- On-Demand Instances: On-Demand Instances let you pay for compute capacity by the hour with no long-term commitments.
- Reserved Instances: Reserved Instances give you the option to make a low, one-time payment for each instance you want to reserve and in turn receive a significant discount on the hourly usage charge for that instance.
- Spot Instances: Spot Instances allow customers to bid on unused Amazon EC2 capacity and run those instances for as long as their bid exceeds the current Spot Price.
Third-Party Tools
Already several third-party tools facilitate this process of utilizing the Cloud as a viable platform for disaster recovery as per the documentation ‘Amanda Enterprise for Cloud Based DR ‘ performs this required function and the below diagram is the courtesy of the vendor site about how this happens which closely matches with above mentioned points on disaster recovery using Cloud.

How About Security Concerns Of Moving Data To Remote Site
Amazon EC2 includes web service interfaces to configure firewall settings that control network access to and between groups of instances.
When launching Amazon EC2 resources within Amazon Virtual Private Cloud (Amazon VPC), you can isolate your compute instances by specifying the IP range you wish to use, and connect to your existing IT infrastructure using industry-standard encrypted IPsec VPN.
Amazon Virtual Private Cloud is a secure and seamless bridge between a company's existing IT infrastructure and the AWS cloud. Amazon VPC enables enterprises to connect their existing infrastructure to a set of isolated AWS compute resources via a Virtual Private Network (VPN) connection. Below diagram is the courtesy from Amazon AWS Website about how the Virtual Private Clouds work.

However, there is lot to be done in terms of encryption, firewall and other aspects of enterprise network to public cloud connectivity, but these can be solved with appropriate options from the products and cloud provider.
Conclusion
EC2 and similar IaaS platforms provide multiple options for enterprises to move their disaster recovery site to a Cloud platform, careful analysis of the above mentioned pros and cons can help the enterprises to take an appropriate decision and action.
Disclaimer
The aim of this article is to promote Cloud utilization for enterprises by identifying the patterns that can be leveraged on, it is not for promoting individual vendors, However one such commercial product from vendor is chosen for the case study. However this may not reflect the view point of the organizations I work present or earlier all the views are my personal based on publicly available material.
Published November 10, 2010 Reads 4,489
Copyright © 2010 SYS-CON Media, Inc. — All Rights Reserved.
Syndicated stories and blog feeds, all rights reserved by the author.
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More Stories By Srinivasan Sundara Rajan
Srinivasan Sundara Rajan works at Gavs Technologies as a Chief Architect. His primary focus is enabling Agile Enterprises by facilitating the adoption of Every Thing As A Service Model with particular concentration on BpaaS (Business Process As A Service). Srinivasan is currently writing a series of articles on Indutry SaaS/BpaaS use cases which enterprises can adopt.All the views expressed are Srinivasan's independent analysis of industry and solutions and need not necessarily be of his current or past organizations. Srinivasan would like to thank every one who augmented his Architectural skills with Analytical ideas.
The cloud has many benefits, but when it comes to application development, how does the cloud help enterprises and development teams create custom software and applications that end users actually care about? Using real world examples from Adobe, Herff Jones and Navy Federal Credit Union, this session will highlight the advantages cloud computing provides for quickly developing custom software and applications with compelling user experiences.
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Nearly every enterprise is evaluating cloud computing solutions either today or in the near term. Many have already made the leap, and many more are getting close to putting that first toe in the water. But there are key considerations that should be made, questions to be asked, and designs to consider before you can feel secure with your provider.
In his session at the 10th International Cloud Expo, David Gulick, Product Manager, Hosting Product Management at Savvis, will help give you food f...
With Cloud Expo 2012 New York (10th Cloud Expo) now under four weeks away, what better time to introduce you in greater detail to the distinguished individuals in our incredible Speaker Faculty for the technical and strategy sessions at the conference...
We have technical and strategy sessions for you dealing with every nook and cranny of Cloud Computing, but what of those who are presenting? Who are they, where do they work, what else have they written and/or said about the Cloud that is t...
SYS-CON Events announced today that Super Micro Computer, Inc., a global leader in high-performance, high-efficiency server technology and green computing, will exhibit at SYS-CON's 10th International Cloud Expo, which will take place on June 11–14, 2012, at the Javits Center in New York City, New York.
Supermicro (NASDAQ: SMCI), the leading innovator in high-performance, high-efficiency server technology, is a premier provider of advanced server Building Block Solutions for Embedded Systems, E...
SYS-CON Events announced today that ScaleMP, a leading provider of virtualization solutions for high-end computing, will exhibit at SYS-CON's 10th International Cloud Expo, which will take place on June 11–14, 2012, at the Javits Center in New York City, New York.
ScaleMP is the leader in virtualization for high-end computing, providing maximum performance and lower total cost of ownership (TCO). The innovative Versatile SMP (vSMP) architecture aggregates multiple independent systems into a sin...
Come learn real-world examples where cloud and mobile are changing the way business works and the impact they're having on efficiency and productivity.
In his session at the 10th International Cloud Expo, Rodrigo Coutinho Senior Product Marketing Manager at OutSystems, will look at how mobile and the cloud are interwoven and the wave of change these two 2012 megatrends will bring to your organization. He will also provide a roadmap to assure you can navigate this sea change for business succes...
Enterprise IT organizations want to deploy a virtualized data center fabric that will provide the foundation for agile private cloud computing. Getting there does not have to be difficult, but it does require a new approach to data center infrastructure design – an approach that is non-disruptive, vendor-agnostic, and very adaptable to changing business requirements.
In his session at the 10th International Cloud Expo, Bruce Fingles, Chief Information Officer and VP of Product Quality at Xsigo...
With Cloud Expo 2012 New York (10th Cloud Expo) now under four weeks away, what better time to introduce you in greater detail to the distinguished individuals in our incredible Speaker Faculty for the technical and strategy sessions at the conference...
With Cloud Expo 2012 New York (10th Cloud Expo) now under four weeks away, what better time to introduce you in greater detail to the distinguished individuals in our incredible Speaker Faculty for the technical and strategy sessions at the conference...
With Cloud Expo 2012 New York (10th Cloud Expo) now under four weeks away, what better time to introduce you in greater detail to the distinguished individuals in our incredible Speaker Faculty for the technical and strategy sessions at the conference...
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