61 lines
4.2 KiB
HTML
61 lines
4.2 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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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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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Get Extended Adaptive Cache" />
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<meta name="abstract" content="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." />
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<meta name="description" content="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." />
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<meta name="DC.Relation" scheme="URI" content="rzahxintro.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzaly/rzalycmaintdef.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzahxgeteac" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Get Extended Adaptive Cache</title>
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</head>
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<body id="rzahxgeteac"><a name="rzahxgeteac"><!-- --></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">Get Extended Adaptive Cache</h1>
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<div><p>After obtaining the performance data from Extended Adaptive Cache
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Simulator and deciding that you want Extended Adaptive Cache to improve your
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system's performance, you must purchase a Read Cache Device (RCD). Extended
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Adaptive Cache is automatically enabled through the RCD.</p>
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<p>To begin using Extended Adaptive Cache, you must have:</p>
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<ul><li>One or more storage I/O adapters that support Extended Adaptive Cache
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(CCIN 2748 for systems running V4R4 or later, or CCIN 2778 for systems running
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V5R1 or later, or CCIN 2757 for systems running the latest release of V5R2).</li>
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<li>A Read Cache Device for each storage I/O adapter that Extended Adaptive
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Cache is to be activated on (CCIN 6731 for systems running V4R4 or later).</li>
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</ul>
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<p>Because Extended Adaptive Cache is automatically enabled through the RCD,
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there is no controlled on or off switch. The RCD may be added without system
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interruption through concurrent maintenance. The RCD resides in an internal
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disk slot and works with all other disk types and capacities. Be aware that
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all data in the Extended Adaptive Cache is also guaranteed to be on the disks.
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In the unlikely event of an RCD failure, there will be no data loss.</p>
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<p>The Read Cache Device can be purchased wherever <span class="keyword">iSeries™</span> hardware
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is sold, or contact your local IBM<sup>®</sup> representative.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahxintro.htm" title="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.">Extended Adaptive Cache</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="../rzaly/rzalycmaintdef.htm">Concurrent maintenance</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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