Risk-aware Migrations For Prepossessing SLAs

SLAs were developed in order to guarantee the customer´s desired quality of service. To prepossess SLAs even in the case of system failures, migrating the job to an alternative resource is a well-known fault-tolerance mechanism. In this paper we start to consider migrations in a risk-aware concept. We plan to introduce risk assessment and management technologies into the grid fabric in order to ensure prepossessing SLAs. The most benefits are seen in a risk-aware scheduling and initiating precautionary fault-tolerance mechanism. This paper focusses on precautionary migrations which should prevent an SLA violation. A motivating scenario presents the variety of required actions in a system with high workload for several migration alternatives. The important aspects of jobs and resources are explained. Furthermore, we present a measurement to estimate the effects of migrating to an alternative resource. This will be one decision criteria in the migration process. Future work will complete the risk-aware scheduling of migrations