Motivating Scenarios Sample Clauses

Motivating Scenarios. The SNAP SLA model is designed to address a broad range of applications through the aggregation of simple SLAs. We motivate its design by examin- ing three scenarios: a Grid in which community schedulers mediate access to shared resources on behalf of different client groups; a file-transfer service that uses advance reservations to perform data staging under deadline conditions; and a job-staging system that uses co-allocation to coordinate functions across multiple resource managers. The schedulers in our scenarios are all examples of a class of resource man- agement intermediaries that are variously referred to as brokers, agents, distributed schedulers, meta-schedulers, or super-schedulers [FRS00, MBHJ98]. What distinguishes each kind of intermediary are the poli- cies that are supported between users, intermediaries, and underlying resource schedulers. For example, an intermediary may support a large community of users (e.g., a typical resource broker), or act on behalf of a single user (an agent). A similarly wide range of policies can exist between the intermedi- ary and its resource(s)—some intermediaries may have exclusive access to resources while others may have no more rights than a typical user. The in- termediary may not even be a distinguished entity for policy but instead may simply act via rights delegated from the client.

Motivating Scenarios. SLAs are widely used in the industry in situations where consumers and providers need or desire to explicitly express certain guarantees over the service transac- tion. These guarantees are typically tied to certain consequences in terms of penalties and rewards depending whether the guarantee is underfulfilled or over- fulfilled; we commonly refer to this consequences as compensations. In this section we motivate the need for formal compensable agreements with three real world scenarios that include both computing services and human- driven services. In all cases, there is a strong need to express compensations related to the guarantees defined. In the rest of the section we introduce the scenario and present an example of compensation identified in its SLA.

Motivating Scenarios. SLAs are widely used in the industry in situations where consumers and providers need or desire to explicitly express certain guarantees over the service transac- tion. These guarantees are typically tied to certain consequences in terms of penalties and rewards depending whether the guarantee is unfulfiled or overful- filled; we commonly refer to these consequences as compensations. In this section we motivate the need for formal compensable agreements with two real world scenarios that include both human-driven services and computing services. In both cases, there is a strong need to express compensations related to the guarantees defined.