84 lines
6.0 KiB
HTML
84 lines
6.0 KiB
HTML
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Cluster concepts" />
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<meta name="abstract" content="Get a complete understanding of how clusters work. Read about the benefits of clusters and how they can be important to you, as well as information on important clustering concepts and how they fit together." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<title>Cluster concepts</title>
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</head>
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<body id="rzaigconcepts"><a name="rzaigconcepts"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Cluster concepts</h1>
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<div><p>Get a complete understanding of how clusters work. Read about the
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benefits of clusters and how they can be important to you, as well as information
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on important clustering concepts and how they fit together.</p>
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<p>An iSeries™ cluster
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is a collection or group of one or more systems or logical partitions that
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work together as a single system. Systems in a cluster, called cluster nodes,
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work cooperatively to provide a single computing solution. iSeries clustering
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supports up to 128 nodes in a cluster. This allows you to efficiently group
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your iSeries systems
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together to set up an environment that provides availability that approaches
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100 percent for your critical applications and your critical data. This helps
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ensure that your critical systems and applications are available 24 hours
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a day, seven days a week. Clusters also provide simplified systems management
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and increased scalability to seamlessly add new components as your business
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grows.</p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzaigconceptsclusterbenefits.htm">Benefits of clusters</a></strong><br />
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Clusters provide a solution if your business demands operational systems 24 hours a day, seven days a week.</li>
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<li class="ulchildlink"><strong><a href="rzaigconceptshowclusterworks.htm">How a cluster works</a></strong><br />
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<span><img src="./delta.gif" alt="Start of change" />The cluster infrastructure provided as a part
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of <span class="keyword">i5/OS™</span>, called cluster
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resource services, provides resiliency for your critical resources. These
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resources can include data, applications, devices, and other resources accessed
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by multiple clients. <img src="./deltaend.gif" alt="End of change" /></span></li>
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<li class="ulchildlink"><strong><a href="rzaigconceptsbasiccluster.htm">Cluster basics</a></strong><br />
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Understand the basic clustering concepts before you begin to design and customize a cluster to satisfy your needs.</li>
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<li class="ulchildlink"><strong><a href="rzaigconceptselements.htm">The elements of a cluster</a></strong><br />
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<span><img src="./delta.gif" alt="Start of change" />An <span class="keyword">iSeries</span> <dfn class="term">cluster</dfn> is
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a collection of one or more systems or partitions that work together as a
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single system. Use this information to understand the elements
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and their relationship to each other.<img src="./deltaend.gif" alt="End of change" /></span></li>
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<li class="ulchildlink"><img src="./delta.gif" alt="Start of change" /><strong><a href="rzaigconceptsevents.htm">Cluster events</a></strong><img src="./deltaend.gif" alt="End of change" /><br />
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Within a cluster several types events, actions, and services can occur.</li>
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<li class="ulchildlink"><strong><a href="rzaigapplications.htm">Cluster applications</a></strong><br />
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<span><img src="./delta.gif" alt="Start of change" />Application resilience is one of the key elements
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in a clustered environment. If you are planning to write and use highly
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available applications in your cluster you should be aware that these applications
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have specific availability specifications. <img src="./deltaend.gif" alt="End of change" /></span></li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaigicclust.htm" title="Clusters let you efficiently group your iSeries servers together to set up an environment that provides availability that approaches 100 percent for your critical applications, devices, and data.">Clusters</a></div>
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</div>
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</div>
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</body>
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