There is provided a method, a data processing system and a computer program product for maintaining service reliability in a data center. A probability of breach of a resource in the data center is determined. A breach of a resource may be the failure of the resource, the unavailability of a resource, the underperformance of a resource, or other problems with the resource. If the probability of breach exceeds a predetermined value, then additional resources are made available to the data center in order to prevent a breach of the resource from affecting the performance of the data center.