ASSYMETRIC DYNAMIC SERVER CLUSTERING WITH INTER-CLUSTER WORKLOAD BALANCING

A method, computer program product or computer system for selecting a target data server from a plurality of data servers in an information system to service a request of a client with a data quality requirement, includes determining a formalized data quality of the client using the data quality requirement, using the formalized data quality of the client and finding a cluster of data servers from the plurality of data servers that can meet the data quality requirement of the client, choosing a select data server from the cluster of data servers, verifying if the select data server can still meet the data quality requirement of the client, and if so, selecting the select data server as the target data server for processing the request, and if not, selecting another data server as the target data server for processing the request.