63 lines
4.6 KiB
HTML
63 lines
4.6 KiB
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="Extended Adaptive Cache" />
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<meta name="abstract" content="You can use Extended Adaptive Cache to improve system performance by collecting disk usage data, and then using those statistics to create a cache, effectively reducing the physical I/O requests for the disk." />
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<meta name="description" content="You can use Extended Adaptive Cache to improve system performance by collecting disk usage data, and then using those statistics to create a cache, effectively reducing the physical I/O requests for the disk." />
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<meta name="DC.Relation" scheme="URI" content="rzahxeac1.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>Extended Adaptive Cache</title>
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</head>
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<body id="rzahxintro"><a name="rzahxintro"><!-- --></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">Extended Adaptive Cache</h1>
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<div><p>You can use Extended Adaptive Cache to improve system performance
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by collecting disk usage data, and then using those statistics to create a
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cache, effectively reducing the physical I/O requests for the disk.</p>
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<p>Improve your <span class="keyword">iSeries™</span> system
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performance with Extended Adaptive Cache. Extended Adaptive Cache improves
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both the I/O subsystem and system response times by reducing the number of
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physical I/O requests that are read from disk. Extended Adaptive Cache generates
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statistical information for the data and then uses a mix of management strategies
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to determine which data to cache. </p>
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<div class="note"><span class="notetitle">Note:</span> <img src="./delta.gif" alt="Start of change" />In V5R4, Extended Adaptive Cache is supported
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on older <span class="keyword">iSeries</span> systems. Extended
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Adaptive Cache uses the feature code, #4331 1.6 GB Read Cache.<img src="./deltaend.gif" alt="End of change" /></div>
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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="rzahxeac1.htm">Extended Adaptive Cache Concepts</a></strong><br />
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Explore Extended Adaptive Cache. Find information about planning, restrictions, and important considerations before you begin to use this tool.</li>
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<li class="ulchildlink"><strong><a href="rzahxgeteac.htm">Get Extended Adaptive Cache</a></strong><br />
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After obtaining the performance data from Extended Adaptive Cache Simulator and deciding that you want Extended Adaptive Cache to improve your system's performance, you must purchase a Read Cache Device (RCD). Extended Adaptive Cache is automatically enabled through the RCD.</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="rzahxapsparent.htm" title="Managing performance on iSeries systems requires the use of a variety of specialized applications. Each of these applications offers a specific insight into system performance. This topic explains several applications and the intended use of each application.">Applications for performance management</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzahxtune.htm" title="When you have identified a performance problem, you will want to tune the system to fix it.">Tune performance</a></div>
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</div>
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</div>
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</body>
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</html>
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