磁盘阵列上虚拟磁盘的管理

随着计算机技术的发展，数据量急速增如，数据管理成为一个研究热点。磁盘阵列的出现极大地改善了数据管理的性能。在使用磁盘阵列时，往往把它划分为多个逻辑磁盘，磁盘的大小不能改变。这种方法降低了磁盘空间的利用效率。为了解决这个问题，可以把磁盘阵列划分为一个或多个共享存储池。每个共享存储池管理多个虚拟磁盘。这些虚拟磁盘共同使用共享存储池的磁盘空间。为了协调多个虚拟磁盘同时向共享存储池读写数据的问题，设计了一个调度算法。使用这种方法，实现了对磁盘阵列的有效管理。

Virtual Disk Management on Disk Array

Data management becomes a research hotspot with the development of computer technology and the increase of amount of data. The emergence of disk array greatly improved the performance of data management. When using the disk array, it is often divided into multiple logical disks, and the size of the logical disk can not be changed. This approach reduced the disk space utilization. To solve this problem, the disk array can be divided into one or more shared storage pools, and each shared storage pool manages multiple virtual disks, the disk space of shared storage pool is used by all virtual disks. A scheduling algorithm is designed in order to coordinate multiple virtual disks simultaneously to read and write data for the shared storage pool. The effective management to the disk array is realized by using this method.