W. Xie, J. Zhou, M. Reyes, J. Noble, and Y. Chen. Two-Mode Data Distribution Scheme for Heterogeneous Storage in Data Centers (short paper). Accepted to appear in the Proceedings of The 2015 IEEE International Conference on Big Data, (BigData'15), 2015. (acceptance rate: 17% full papers and 18% short papers accepted out of 363 complete submissions).