In-band (often called symmetric) virtualization sits between the host and the storage device allowing caching.
可控制的(常常称作对称的)虚拟化位于宿主与存储设备之间，并允许缓存。
Storage device-based virtualization provides the facility to join multiple physical disks in a single array and divide it to multiple volumes of different sizes based on requirements.
基于存储设备的虚拟化可以把多个物理磁盘放在单一阵列中，并根据需求把它划分为多个不同大小的卷。
In-band means storage virtualization was realized on the path from host to storage device and out-of-band means storage virtualization was finished before loading data.
前者于数据读写过程中，在主机到存储设备的路径上实现。后者在读写前已作好虚拟。
In-band means storage virtualization was realized on the path from host to storage device and out-of-band means storage virtualization was finished before loading data.
前者于数据读写过程中，在主机到存储设备的路径上实现。后者在读写前已作好虚拟。
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