inter-disk 策略定义了一个逻辑卷的物理分区实际驻留的磁盘的数目。
The inter-disk policy defines the number of disks on which the physical partitions of a logical volume actually resides.
卷组划分成一个或多个逻辑卷，文件最终驻留在逻辑卷中。
Volume groups are divided into one or more logical volumes where your files eventually reside.
LVM允许数据驻留在多个物理驱动器上，但是可以将它们配置为属于单个卷组。
The LVM enables the data to be on multiple physical drives, though they might be configured to be on a single volume group.
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