Improving Service Availability of Cloud Systems by Predicting Disk Error Yong Xu and Kaixin Sui, Microsoft Research, China; Randolph Yao, Microsoft Azure, USA; Hongyu Zhang, The University of Newcastle, Australia; Qingwei Lin, Microsoft Research, China; Yingnong Dang, Microsoft Azure, USA; Peng Li, Nankai University, China; Keceng Jiang, Wenchi Zhang, and Jian-Guang Lou, Microsoft Research, China;