A set of two or more disks that may appear to the system as one large disk. A disk array can be either a software or a hardware device.

• 磁盘阵列：由一组两个或者多个磁盘组成，就系统而言可以看作是一个大的逻辑磁盘。一个磁盘阵列不仅可以当一个软件装置，也可以当作一个硬件装置。