calibration bars

The condition of tolerating two disk failures is achieved by us-ing the check stripe unit partition which is the main step of our new strategy.

通过讨论由数据条纹、其镜像和奇偶校验组成的校验条纹的容许两个盘故障的阵列布局,给出了一种新的阵列布局策略:把校验条纹的单元划分作为阵列布局的一个主要步骤,使得容许两个故障的条件通过校验条纹的单元划分来实现。