由于冗余是ha集群的关键特性，因而在这个例子中基本的组成部分包括节点管理、分布式文件系统、卷管理和监控。
With redundancy being the key feature of an ha cluster, the components that are essential in this example are node management, a distributed file system, volume management, and monitoring.
系统上的对象可以是文件、文件系统、卷组、设备等。
Objects on a system could be files, file systems, volume groups, devices, and more.
通过利用UNIX处理文件系统和卷的方法可以提高计算机的安全性和性能。
UNIX's method of handling file systems and volumes provides you with an opportunity to improve your computers' security and performance.
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