110 lines
7.0 KiB
HTML
110 lines
7.0 KiB
HTML
<?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 name="DC.Type" content="task" />
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<meta name="DC.Title" content="Share servers with external drives" />
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<meta name="abstract" content="You can choose whether you want your stand-alone tape device assigned to an iSeries server when the tape device is varied on. Assigning a tape device reserves the tape device specifically for one system." />
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<meta name="description" content="You can choose whether you want your stand-alone tape device assigned to an iSeries server when the tape device is varied on. Assigning a tape device reserves the tape device specifically for one system." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Identifier" content="rzam4sharedrives" />
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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>Share servers with external drives</title>
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</head>
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<body id="rzam4sharedrives"><a name="rzam4sharedrives"><!-- --></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">Share servers with external drives</h1>
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<div><p>You can choose whether you want your stand-alone tape device assigned
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to an iSeries™ server
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when the tape device is varied on. Assigning a tape device reserves the tape
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device specifically for one system.</p>
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<div class="section"><p> You can attach the 3480, 3490, 3490E, 3590, or 3592 tape devices
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to any of the following units:</p>
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<ul><li>One input/output processors on the same iSeries server</li>
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<li>Two iSeries servers</li>
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<li>An iSeries server
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and a different server</li>
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</ul>
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</div>
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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="rzam4installstandalone.htm" title="The instructions for installing and configuring your tape device vary based on which model of iSeries server you have and which type of tape device you are installing.">Install stand-alone tape devices</a></div>
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</div>
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</div><div class="nested1" xml:lang="en-us" id="assignalonetapedevserver"><a name="assignalonetapedevserver"><!-- --></a><h2 class="topictitle2">Assign a stand-alone tape device to a server</h2>
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<div><div class="section">To assign a tape device to a server do the following steps:</div>
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<ol><li class="stepexpand"><span>Use the Work with Device Description (WRKDEVD *TAP) command to
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work with a tape device description.</span></li>
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<li class="stepexpand"><span>Select 2 (Change) for the tape device you want to work with.</span></li>
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<li class="stepexpand"><span>In the <var class="varname">Assign device at vary on</var> field, specify
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*YES and press Enter to assign the tape device to the system.</span></li>
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<li class="stepexpand"><span>Type <samp class="codeph">VRYCFG</samp> (the Vary Configuration command) to
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vary off the tape device. </span> <div class="note"><span class="notetitle">Note:</span> The Vary Configuration (VRYCFG)
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command can be run by using the VRYCFG command or by using the Work with Configuration
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Status (WRKCFGSTS) command. To use the Work with Configuration Status command,
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type <samp class="codeph">WRKCFGSTS *DEV *TAP</samp> and press Enter.</div>
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</li>
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<li class="stepexpand"><span>Type <samp class="codeph">VRYCFG</samp> to vary on the tape device and assign
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it to a server.</span></li>
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</ol>
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<div class="section"><p>If the tape device is being used by another server, a message is
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displayed that indicates the tape device is assigned elsewhere. The tape device
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must be varied off at the other server before it can be varied on at a new
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server.</p>
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</div>
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</div>
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</div>
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<div class="nested1" xml:lang="en-us" id="leavetapedevunassigned"><a name="leavetapedevunassigned"><!-- --></a><h2 class="topictitle2">Leave a tape device unassigned</h2>
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<div><div class="section">To leave a tape device unassigned, do the following steps:</div>
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<ol><li class="stepexpand"><span>Type <samp class="codeph">WRKDEVD *TAP</samp> (the Work with Device Description
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command) to work with a tape device description. In the <var class="varname">Assign device
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at vary on</var> field, specify *NO and press Enter to leave the tape
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device unassigned.</span> <div class="note"><span class="notetitle">Note:</span> A tape device that is unassigned can be
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varied on to both servers. You must control the tape application programs
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so that the two systems do not interfere with each other. The results of failing
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to control the tape application programs can be unpredictable.</div>
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</li>
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<li class="stepexpand"><span>Type the following command and press Enter to vary off the tape
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device:</span> <pre>VRYCFG CFGOBJ(TAP<var class="varname">xx</var>) CFGTYPE(*DEV) STATUS(*OFF)</pre>
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</li>
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<li class="stepexpand"><span>Type the following command and press Enter to vary on the tape
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device:</span> <pre>VRYCFG CFGOBJ(TAP<var class="varname">xx</var>) CFGTYPE(*DEV) STATUS(*ON)</pre>
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</li>
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</ol>
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</div>
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</div>
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<div class="nested1" xml:lang="en-us" id="considshartapedevtwoservers"><a name="considshartapedevtwoservers"><!-- --></a><h2 class="topictitle2">Considerations for sharing a tape device between two servers</h2>
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<div><div class="section"><p>When a tape device is being shared by two iSeries servers, the tape device is only
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available on one server at a time. To use a drive, vary it on by using the
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following command and pressing Enter:</p>
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<pre>VRYCFG CFGOBJ(TAP<var class="varname">xx</var>) CFGTYPE(*DEV) STATUS(*ON)</pre>
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<p>If
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you do not want to vary on tape devices during future initial program loads
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(IPLs), type the following command and press Enter:</p>
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<pre>CHGCTLTAP CTLD(TAPCTL<var class="varname">xx</var>) ONLINE(*NO)</pre>
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<p>After
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doing an IPL, to vary on only the controller, type the following on any command
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line and press Enter:</p>
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<pre>VRYCFG CFGOBJ(TAPCTL<var class="varname">xx</var>) CFGTYPE(*CTL) STATUS(*ON) RANGE(*OBJ)</pre>
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<div class="note"><span class="notetitle">Note:</span> By
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using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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</div>
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</div>
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</div>
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</body>
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</html> |