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Intercloud Interoperability to schedule dynamic
operation for IaaS cloud providers is a requirement
to achieve this objective.
Since, SLA and QoS models are important
factors to introduce a comprehensive Intercloud
Interoperability Framework, the paper refers to some
useful references and proposes the essential metrics
for SLA and QoS to integrate with cloud systems.
Then, a conceptual model for the Intercloud
Framework to dispatch workloads between various
clouds is proposed. The Intercloud Framework
receives tasks through Intercloud Interface; specifies
the task details; considers all required SLA/QoS
metrics; discovers and selects the available IaaS
clouds; maps the task according to each offered
cloud formats and requirements; dispatches the tasks
between selected clouds; and finally collects and
maps the results to an understandable format for the
consumer cloud.
The Transformation Engine component of the
framework is a core module to provide intercloud
interoperability by mapping workloads to other
cloud providers. MDA is identified as an appropriate
approach to develop the Transformation Engine
module.
As to continuing the work, it is planned to adjust
the proposed framework according to the results of
simulation experiments. Future work will expand the
Intercloud framework to support interoperability in
data migration and workload management between
cloud providers.
ACKNOWLEDGEMENTS
The authors sincerely acknowledge the financial
support from the grant of the Portuguese Foundation
of Science and Technology (FCT), the EC 7th
Framework Programme under grant agreement n°
FITMAN 604674 (http://www.fitman-fi.eu), and the
Portuguese Projecto Mobilizador QREN
PRODUTECH.
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