65 lines
4.2 KiB
HTML
65 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 name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Optical volumes" />
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<meta name="abstract" content="All optical data is stored on a unit that is called a volume. This is true regardless of the type of media, the type of optical media library that is used, and the way the storage device connects to your system." />
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<meta name="description" content="All optical data is stored on a unit that is called a volume. This is true regardless of the type of media, the type of optical media library that is used, and the way the storage device connects to your system." />
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<meta name="DC.Relation" scheme="URI" content="rzam4optstgcncpts.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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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Optical volumes</title>
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</head>
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<body id="rzam4optvolms"><a name="rzam4optvolms"><!-- --></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 volumes</h1>
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<div><p>All optical data is stored on a unit that is called a volume. This
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is true regardless of the type of media, the type of optical media library
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that is used, and the way the storage device connects to your system.</p>
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<p>A single CD-ROM or DVD-ROM disk contains one volume. WORM and erasable
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optical cartridges are two sided and contain two volumes per cartridge (one
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per side). DVD-RAM can be either one sided or two sided.</p>
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<p>Each volume has its own name that is chosen by the person who initializes
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the volume. The name chosen must be unique from the names of all other volumes
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on the system. Two volumes with the same name cannot be active at the same
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time. The volume name usually never changes after the volume is generated,
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although volume renaming is supported. The creator of the CD-ROMs and DVD-ROMs
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chooses the names, and the names cannot be changed.</p>
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<p>HFS, the integrated file system, and the save and restore functions all
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use volume names to access or create data on the volume.</p>
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<p>You can display and manage the optical volumes on an i5/OS™ by using
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the Work with Optical Volumes (WRKOPTVOL) command. The hierarchical file system
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and integrated file system include the volume name in their path name to select
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which volume to use. A typical optical path looks like this:</p>
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<div class="p"><pre>/QOPT/VOLUMENAME/MYDIR/MYFILE.EXT</pre>
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</div>
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<p>Where:</p>
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<ul><li><samp class="codeph">/QOPT</samp> is the name of the optical file system.</li>
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<li><samp class="codeph">/VOLUMENAME</samp> is the volume name that is chosen for the
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volume.</li>
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<li><samp class="codeph">/MYDIR</samp> is the name of a directory on the volume.</li>
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<li><samp class="codeph">/MYFILE.EXT</samp> is the name of a file in the directory.</li>
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</ul>
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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="rzam4optstgcncpts.htm" title="This topic lists the commands available to system administrators and programmers through the primary menu.">Concepts for optical storage</a></div>
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</div>
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</div>
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<img src="./deltaend.gif" alt="End of change" /></body>
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</html>
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