Step 2: Prepare the ER disk space.

步骤2：准备er磁盘空间。

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The Disk usage TAB shows information and usage statistics about the three areas of space used by ER at the node.

Disk Usage选项卡显示关于ER在节点处使用的空间的三个区域的信息和使用情况统计数据。

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This paper introduces several methods of dual copy for disk system, then it explains two dual copy models for disk system in ord er to reduce the seek-time.

本文首先介绍了多种冗余存储技术，然后提出两种使用双拷贝技术减少磁盘找道时间的模型。

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