卷管理是在不对集群存储系统产生消极影响的前提下动态管理存储的能力。

Volume management is the ability to handle storage dynamically without negatively impacting a cluster's storage system.

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实验结果表明，存储系统中的热点区域一般是比较稳定的，而实现了设备间的数据动态调整后，对虚拟盘的平均访问响应时间可缩短23%。

The experiments show that the hot regions in the storage system are quite steady, and after the dynamic adjusting between devices, the average response time of virtual disks can be reduced by 23%.

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在集群环境下，将分布式的外设构成一种动态虚拟存储系统能够较好地解决这个问题。

To solve the problem, it is a good idea to construct the distributed disks in cluster system into a DVDA(dynamic virtual parallel disk array).

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