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PowerHA

PowerHA

PowerHA

PowerHA

1

PowerHA therefore strongly recommends that there be at least one non-IP network connecting a node to at least one other node .

因此，PowerHA 强烈建议节点通过至少一个非 IP 网络连接到至少一个其他节点。

2

The PowerHA pureScale servers (also referred to as CF ) provide a scalable and centralized locking mechanism to ensure data coherency .

PowerHApureScale 服务器（也称为 CF ）实现了一种可扩展的集中锁机制以保证数据的一致性。

3

If it can't, then those interfaces are marked as down and PowerHA is able to react accordingly .

如果它 ping 不通这些地址，就把这些接口标为关闭的，PowerHA 能够做出相应的反应。

4

PowerHA SystemMirror can be configured to minimize both planned and unplanned outages and can also be used for offline backups .

PowerHASystemMirror 可以最小化计划内和计划外中断，也可用于脱机备份。

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The main driver for this approach is the way the PowerHA cluster communicates in a virtual network environment .

采用这种方式主要是由于 PowerHA 集群在虚拟网络环境中的通信方式。

7

PowerHA uses networks to detect and diagnose failures, as well as providing clients with highly available access to applications .

PowerHA 使用网络探测和诊断故障以及为客户机提供高可用性的应用程序访问能力。

8

PowerHA SystemMirror replicates at the disk IO level , which is referred to as hardware replication .

PowerHASystemMirror 是在磁盘 IO 级别上执行复制，所以被称为硬件复制。

9

Please note that this article uses terms PowerHA and HACMP interchangeably and assumes PowerHA V5. 5 is running on the cluster.

请注意，本文互换地使用 PowerHA 和 HACMP 这两个词，而且假设集群上正在运行 PowerHAV5 .

10

If your business is looking for a high availability solution , PowerHA SystemMirror for i is a great choice to make.

如果您的公司正在寻找一种高可用性解决方案，那么 PowerHASystemMirrorfori 是您最好的选择。

12

Make sure you define these addresses within the proper respective PowerHA-defined network .

确保在适当的 HACMP 定义的相应网络中定义这些地址。

14

If this file is not configured appropriately , network failures could go undetected by PowerHA.

如果没有适当地配置这个文件，PowerHA 就无法探测到网络故障。

15

Question: Do all cluster nodes need to be at the same version of PowerHA and AIX operating system ?

所有节点是否需要使用 PowerHA 和 AIX 操作系统的相同版本？

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Refer to the IBM technical documentation and PowerHA documentation for more information relating to PowerHA and virtual storage support .

关于 PowerHA 和虚拟存储支持的更多信息，请参见 IBM 技术文档和 PowerHA 文档。

19

Whenever a failure happens , it looks for these policies and works accordingly .

当发生故障时，PowerHA 寻找这些策略并执行相应的操作。

20

PowerHA SystemMirror is deeply integrated into the operating system and monitors for and reacts to both hardware and software failures .

PowerHASystemMirror 深入集成在操作系统中，可对软硬件故障进行监视并作出反应。

21

IPAT via aliasing: PowerHA adds the service IP address to the NIC (accomplished using AIX IP aliasing feature).

通过别名实现 IPAT：PowerHA 使用 AIXIP 别名特性把服务 IP 地址添加到 NIC 中

22

This promises to simplify high-availability application management with PowerHA SystemMirror.

它承诺通过 PowerHASystemMirror 简化高可用性应用程序管理。

23

This article provides an introduction to PowerHA and shows how to set up and configure a simple two-node cluster .

本文将简要介绍 HACMP ，并演示如何设置和配置一个简单的双节点集群。

24

If automatic failover is not desired , it is also possible to configure PowerHA to wait for direction from an system administrator .

如果不需要自动故障转移，也可以将 PowerHA 配置为等待系统管理员的指示。

25

Install PowerHA on all the cluster nodes and configure minimal cluster .

在所有集群节点上安装 PowerHA 并配置最小规模的集群。

26

PowerHA is designed by IBM to provide integrated resiliency for AIX environments .

IBM 设计 PowerHA 的目的是为 AIX 环境提供综合的弹性。

27

PowerHA will discover all the networks and disks connected to the nodes .

PowerHA 会发现连接到节点的所有网络和磁盘。

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Before starting off with the configurations , let 's look at the networking and the storage considerations of PowerHA.

开始研究配置之前，先讨论一下 PowerHA 的连网和存储考虑事项。

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