Date Added: Aug 2012
The geographically distributed data centers for the rapid growth of worldwide cloud service bring the demand of massive inter-data center information exchange. Considering the capacity and costs, existing optical networks show their advantages to carry the non-interactive, delay tolerated and bulk inter-data center data. In order not to affect the real-time traffic, these bulk data is usually transferred between data centers when traffic load is relatively light. However, to transfer these bulk data in the same period of time may cause severe resource competition, and the network performance will deteriorate.