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853 high scalability-2010-07-08-Cloud AWS Infrastructure vs. Physical Infrastructure


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Introduction: This is a guest post by Frédéric Faure (architect at Ysance ) on the differences between using a cloud infrastructure and building your own. Frédéric was kind enough to translate the original French version of this article into English. I’ve been noticing many questions about the differences inherent in choosing between a Cloud infrastructure such as AWS (Amazon Web Services) and a traditional physical infrastructure. Firstly, there are a certain number of preconceived notions on this subject that I will attempt to decode for you. Then, it must be understood that each infrastructure has its advantages and disadvantages: a Cloud-type infrastructure does not necessarily fulfill your requirements in every case, however, it can satisfy some of them by optimizing or facilitating the features offered by a traditional physical infrastructure. I will therefore demonstrate the differences between the two that I have noticed, in order to help you make up your own mind. The Fram


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1 This is a guest post by Frédéric Faure (architect at Ysance ) on the differences between using a cloud infrastructure and building your own. [sent-1, score-0.435]

2 I’ve been noticing many questions about the differences inherent in choosing between a Cloud infrastructure such as AWS (Amazon Web Services) and a traditional physical infrastructure. [sent-3, score-0.615]

3 In fact, regarding the latter, we can’t speak for clients (they are the ones holding the credit card) about infrastructure management, because we upload our application using the APIs provided and leave the entire infrastructure management to the service provider. [sent-8, score-0.773]

4 Physical infrastructure As far as physical infrastructure is concerned, I will examine the notion of self-hosted infrastructure and equally the notion of infrastructure supported by a hosting provider. [sent-11, score-1.291]

5 A person with experience in the field, able to set up the infrastructure requirement is needed: the tool may change but the skills must still be available. [sent-25, score-0.364]

6 Indeed, being able to pull up resources on the fly will enable infrastructure management to be scheduled and automated via scripts which will call up the APIs provided by Amazon enabling communication with its web services. [sent-31, score-0.483]

7 The systems administrator’s craft is therefore evolving between a physical infrastructure and an AWS-type Cloud infrastructure: he is becoming more and more of a developer. [sent-34, score-0.555]

8 As I mentioned earlier, one of the crucial differences between the two types of infrastructure is the flexibility and dynamism provided by the Cloud solution, compared to a traditional physical architecture (whether it is based on virtualization or not). [sent-37, score-0.741]

9 You also have complete access to certain elements such as security groups (firewall) set for each instance… And that’s very useful. [sent-42, score-0.398]

10 All the safety standards that need to be met in terms of fire protection, computer cooling, redundant electrical power supply, physical security against break-ins, distributing the hardware across 2 or more physical datacenters for disaster recovery, etc. [sent-46, score-0.65]

11 To easily calculate how much your infrastructure will cost you, take advantage of the new calculator provided by Amazon: Simple Monthly Calculator . [sent-57, score-0.345]

12 Simple Monthly Calculator You can do the comparison with the cost of your local infrastructure or with that of your hosting provider. [sent-59, score-0.359]

13 However, it must be acknowledged that often the cosy aspects of “home”-hosted infrastructure can lead to a certain lack of rigor on many issues. [sent-67, score-0.465]

14 Total visibility of our infrastructure is therefore not possible on Cloud. [sent-76, score-0.351]

15 Unlike the specific contracts you may sign with your hosting providers, you must provide for these elements yourself, or regarding on-call support for example, you could out-source it to a facilities management company. [sent-90, score-0.448]

16 Some traditional hosting providers offer packaged monitoring with their services. [sent-93, score-0.34]

17 The first key point is that the level of security supplied in Amazon datacenters, not just physically but – equally importantly – in programmatically terms, will still be streets ahead of your average corporate computer room, even the datacenters of the smallest hosting providers. [sent-104, score-0.575]

18 Firstly because that is Amazon’s business: a security problem revealed in their infrastructure would have immediate implications in terms of user reactions (and thus in terms of business). [sent-105, score-0.383]

19 Conclusion The evolving duties of infrastructure management can be clearly seen in this first part: from handling physical resources by means of APIs, underlying mechanisms ensuring data durability, availability of services, etc. [sent-119, score-0.635]

20 right up to server power supply and the physical security of datacenters, all of which are supported transparently. [sent-120, score-0.368]


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