, which requires greater computation, but lowers storage overhead, whereby the array stores a parity segment for a stripe such that any one segment that is lost can be recreated. ,这要求更大的计算量,但降低了存储费用,因此阵列将奇偶校验片段存储为条带,以便任何片段丢失时都能重新创建。
Notice that storage for the parity segment is rotated among the disks so that each disk stores data segments for some stripes and parity segments for other stripes. 注意,奇偶校验片段的存储在磁盘中旋转,因此每个磁盘会存储一些条带的数据片段和其他条带的奇偶校验片段。
Because of the lower storage overhead, parity does not create a copy that can be used to improve performance the way mirroring does. 由于存储费用较低,因此奇偶校验不会以安装镜像的方式创建用于提高性能的副本。