Economic model of a cloud provider operating in a federated cloud
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hdl:2117/16601
Document typeArticle
Defense date2012-09
Rights accessRestricted access - publisher's policy
Abstract
Resource provisioning in Cloud providers is
a challenge because of the high variability of load
over time. On the one hand, the providers can serve
most of the requests owning only a restricted amount
of resources, but this forces to reject customers during
peak hours. On the other hand, valley hours incur
in under-utilization of the resources, which forces
the providers to increase their prices to be profitable.
Federation overcomes these limitations and allows
providers to dynamically outsource resources to others
in response to demand variations. Furthermore, it allows
providers with underused resources to rent them
to other providers. Both techniques make the provider
getting more profit when used adequately. Federation
of Cloud providers requires having a clear understanding
of the consequences of each decision. In this paper,
we present a characterization of providers operating
in a federated Cloud which helps to choose the most
convenient decision depending on the environment
conditions. These include when to outsource to other
providers, rent free resources to other providers (i.e.,
insourcing), or turn off unused nodes to save power.
We characterize these decisions as a function of several
parameters and implement a federated provider that uses this characterization to exploit federation. Finally,
we evaluate the profitability of using these techniques
using the data from a real provider.
CitationGoiri, I.; Guitart, J.; Torres, J. Economic model of a cloud provider operating in a federated cloud. "Information systems frontiers", Setembre 2012, vol. 14, núm. 4, p. 827-843.
ISSN1387-3326
Publisher versionhttp://www.springerlink.com/content/1640452j52586514/fulltext.pdf
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