Optical Networks for Grid and Cloud Computing Applications
The evolution towards grid and cloud computing as observed for over a decennium illustrates the crucial role played by (optical) networks in supporting today's applications. In this paper, the authors start from an overview of the challenging applications in both academic (further referred to as scientific), enterprise (business) and non-professional user (consumer) domains. They pose novel challenges, calling for efficient interworking of IT resources, for both processing and storage, as well as the network that interconnects them and provides access to their users. They outline those novel applications' requirements, including sheer performance attributes, as well as the ability to adapt to changing demands (usually referred to as elasticity) and possible failures (i.e. resilience).