Before we begin, let's define what we mean by the term high availability (ha).

在开始之前，我们先来定义术语高可用性(HA)的意义。

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Let's begin with a quick introduction to high availability (HA) and RAID, and then explore the architecture and use of the DRBD.

让我们首先简要介绍一下高可用性(HA)和RAID，然后再研究DRBD的架构和用法。

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In Part 1 of this series, I introduced you to high availability (HA) concepts and how to install and configure heartbeat.

在本系列的第1部分中，我向您介绍了高可用性(HA)概念，以及如何安装和配置heartbeat。

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