75 lines
5.1 KiB
HTML
75 lines
5.1 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="Logical partition concept: alternate restart (IPL) devices and removable media device" />
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<meta name="abstract" content="A removable media device reads and writes to media (tape, CD-ROM, or DVD)." />
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<meta name="description" content="A removable media device reads and writes to media (tape, CD-ROM, or DVD)." />
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<meta name="DC.Relation" scheme="URI" content="rzaitdiskunit.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaitaipl.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaittagged.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaithardwarereq.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaitiodevice.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaitloadsource.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaitiodevice.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="rzaitremovable" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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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>Logical partition concept: alternate restart (IPL) devices and removable
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media device</title>
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</head>
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<body id="rzaitremovable"><a name="rzaitremovable"><!-- --></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">Logical partition concept: alternate restart (IPL) devices and removable
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media device</h1>
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<div><p>A removable media device reads and writes to media (tape, CD-ROM,
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or DVD).</p>
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<p>You must have either a tape or an optical (CD-ROM or DVD) device available
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for every logical partition. The system also uses some of these devices as
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the alternate restart or IPL device and alternate installation device.</p>
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<p>Logical partitions can (depending on your hardware setup) share a tape
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or optical device and its attaching IOP among themselves. However, only one
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logical partition can use the device at any time. To switch devices between
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partitions, you must move the IOP, with the shared device, to the desired
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logical partition. For more information on how to move an IOP, refer to Logical
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Partition concept IOP.</p>
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<div class="section"><h4 class="sectiontitle">Alternate IPL Device</h4><p>The media in the device is
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what the system uses to start from when you perform a D source IPL. The alternate
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IPL device loads the Licensed Internal Code contained on the removable media
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instead of the code on the load source. It may also install the system.</p>
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</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="rzaitaipl.htm">Logical partition requirements for alternate IPL devices</a></strong><br />
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After partitions are defined, the Licensed Internal Code and operating system must be loaded from either optical or tape to the load source disk unit for the logical partition.</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="rzaitdiskunit.htm" title="Disk units store data. The server can use and reuse this data at any time. It is more permanent than memory, but you can still erase it.">Logical partition concept: disk units</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="rzaittagged.htm" title="A tagged resource is an IOP that you select because it controls a device that performs a specific function for a logical partition.">Logical partition concept: tagged resource</a></div>
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<div><a href="rzaitiodevice.htm" title="The IOP attaches to the system I/O bus and one or more input/output adapters (IOAs). The IOP processes instructions from the server and works with the IOAs to control the I/O devices.">Logical partition concept: IOP</a></div>
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<div><a href="rzaitloadsource.htm" title="Each logical partition must have one disk unit designated as the load source.">Logical partition concept: load source</a></div>
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</div>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="rzaithardwarereq.htm" title="Understand the basic hardware concepts and requirements to partition your server.">Hardware for logical partitions</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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