62 lines
4.1 KiB
HTML
62 lines
4.1 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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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Optical index information" />
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<meta name="abstract" content="Optical index information regarding which volumes are in a particular optical media library and which directories are on each volume is kept at different levels within the system." />
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<meta name="description" content="Optical index information regarding which volumes are in a particular optical media library and which directories are on each volume is kept at different levels within the system." />
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<meta name="DC.Relation" scheme="URI" content="rzam4reclmoptindxdbase.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzam4optindxdbfiles.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzam4intrnallibindx.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Identifier" content="rzam4optindxinfo" />
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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>Optical index information</title>
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</head>
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<body id="rzam4optindxinfo"><a name="rzam4optindxinfo"><!-- --></a>
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<img src="./delta.gif" alt="Start of change" /><!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Optical index information</h1>
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<div><p>Optical index information regarding which volumes are in a particular
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optical media library and which directories are on each volume is kept at
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different levels within the system. </p>
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<p>Optical index files are used to enhance performance by eliminating the
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need to access the optical media library or physical media each time the location
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of a volume or directory is needed. </p>
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<p>Failures, system upgrades, and physically moving optical library devices
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from one system to another can cause these index files to become out of synchronization
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with the actual contents of a particular optical media library or volume.
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When this happens, messages are sent indicating that the optical index needs
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to be reclaimed, such as OPT1245, OPT1825, or OPT1330. These messages direct
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you to run the Reclaim Optical (RCLOPT) command. The following topics describe
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the optical index files that are kept at the different levels of the system.
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An understanding of the different optical indexes is helpful when deciding
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which type of reclaim optical index to run.</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="rzam4optindxdbfiles.htm">Optical index database files</a></strong><br />
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The optical indexes reside in the physical files QAMOVAR and QAMOPVR.</li>
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<li class="ulchildlink"><strong><a href="rzam4intrnallibindx.htm">Internal library index</a></strong><br />
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Each optical media library keeps an internal library index of each volume that it contains.</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="rzam4reclmoptindxdbase.htm" title="A system-level index, called the optical index database, keeps track of all optical volumes and directories known to the system.">Reclaim the optical index database</a></div>
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