Getting a grip on cloud development
November 1, 2009 —
(Page 1 of 6)
The reliability and safety of cloud computing has become more established, but many organizations are uncertain about how to get started. While cloud computing is a sea change in computing, it is hardly different from evaluating any other new technology.
Adopting cloud services follows a familiar process: finding the appropriate use case and a cloud that meets the requirements, followed by a cost/benefit analysis, pilot projects, and determining the organizational impact of adoption, experts say.
Several experts agreed that the most economical uses for the cloud involve satisfying scenarios when organizations require hardware resources that are not regularly used during daily operations, as well as for doing development and testing. Other uses require more careful consideration.
"The cloud business model that works the best is the burst-out model," said Cameron Bahar, founder and CTO of cloud storage provider ParaScale. Bursting out means buying capacity in the cloud when IT workloads are above peak capacity.
Bahar said that many cloud providers have well-defined APIs for scaling out applications into cloud architecture. "They can use the application in-house, and get the benefit of elasticity and service model once there is a need to scale out on unexpected or seasonal demand," he said.
"When The New York Times has issues to convert to PDFs, it could take thousands of servers and weeks to complete. It is a no-brainer to use a credit card to buy CPU hours and disk bandwidth to do it in a week, and then shut it down when the job is done."
Symphony Services CTO Jerry Smith was skeptical about the cost effectiveness of burst-out usage, a model that has seasonal or episodic variability. "For most customers, the jury is still out. Managers should be asking for more detailed data to build their model, not one built on assumptions and speculation," he said.
He added, though, that it is expensive for many organizations to build extra capacity in a data center.
Customers that use cloud environments for development and testing are either attempting to solve a particular problem or are trying to work better, said Ian Knox, director of product management at Skytap, a company that offers cloud-based IT lab solutions.
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