104 lines
6.5 KiB
HTML
104 lines
6.5 KiB
HTML
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<!DOCTYPE html
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Power down a system with logical partitions" />
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<meta name="abstract" content="The proper way to power down a secondary partition is by using the i5/OS power down system (PWRDWNSYS) command." />
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<meta name="description" content="The proper way to power down a secondary partition is by using the i5/OS power down system (PWRDWNSYS) command." />
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<meta name="copyright" 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>Power down a system with logical partitions</title>
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</head>
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<body id="rzaitdelaypwroff"><a name="rzaitdelaypwroff"><!-- --></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">Power down a system with logical partitions</h1>
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<div><p>The proper way to power down a secondary partition is by using
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the <span class="keyword">i5/OS™</span> power
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down system (PWRDWNSYS) command.</p>
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<div class="section"><h4 class="sectiontitle">Power down a secondary partition</h4><p>From a command
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line at a workstation on that secondary partition type PWRDWNSYS OPTION (*CNTRLD)
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DELAY (600) and press Enter.</p>
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<p>If you power down a secondary partition,
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you will not affect any other logical partitions. This command is the preferred
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way to power down a secondary partition.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Power down the primary partition</h4><p>Before you power
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down the primary partition, use the PWRDWNSYS command to power down each of
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the secondary partitions. Then, use the PWRDWNSYS command to power down the
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primary partition.</p>
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<p>Beginning in V5R2, you can set up confirmation support
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on the PWRDWNSYS command. This confirmation display will ask you if you want
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to power down the primary partition while secondary partitions are active.
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To change the primary PWRDWNSYS command default from a command line, type
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ADDENVVAR and press Enter. The environment variable is QIBM_PWRDWNSYS_CONFIRM.</p>
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<p>From
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a command line at a workstation on the primary partition type PWRDWNSYS OPTION
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(*CNTRLD) DELAY (600) and press Enter.</p>
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<p>If you do not power down the
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secondary partitions before the primary partition, all of the active secondary
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partitions will power down abnormally.</p>
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<p>The partition manager will allow
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secondary partitions to attempt to write changed data from memory to disk
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units. However, the operating system may not reach normal job termination.
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The next IPL for the affected secondary partition will be treated as an abnormal
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IPL and may take much longer to complete.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Delayed power off</h4><p>Use delayed power off (the power
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button on the remote control panel) only when you must power down a logical
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partition, and the PWRDWNSYS command does not work.</p>
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<p>When you use the
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delayed power off option, the partition waits a predetermined amount of time
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to power down. This allows the partition time to end jobs and write data to
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disks. If the partition is unable to shut down within the predetermined amount
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of time, it will end abnormally and the next restart may take a long time.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Immediate power off</h4><p>Use immediate power off (function
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8 on the remote control panel) only when a logical partition cannot power
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down using PWRDWNSYS or delayed power off.</p>
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<p>When you use the immediate
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power off option from the remote control panel, the system powers down without
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any preset delay. This may cause an abnormal IPL of the logical partition
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and possibly cause loss of data.</p>
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<p>To perform a delayed power off or an
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immediate power off, you should be working with the remote control panel.
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The <span class="uicontrol">power button</span> will start a delayed power off and <span class="uicontrol">function
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8</span> will start an immediate power off of a system. You need a Service
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Tools user ID with operations or administration authority to the System Partitions
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function in Dedicated Service Tools (DST) to display the remote control panel.</p>
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<p>Refer
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to <a href="../rzatm/rzatmcpnlfunct.htm">Control panel functions</a> for
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information on how to use the remote control panel and <a href="../rzal2/rzal2ipl.htm">Restart the system (IPL)</a> for instructions
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on how to restart your server.</p>
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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="rzaitwronofflpar.htm" title="Understand how to safely restart and power down a system with logical partitions.">Restart and power down a system with logical partitions</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="rzaitwronofflpar.htm" title="Understand how to safely restart and power down a system with logical partitions.">Restart and power down a system with logical partitions</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="rzaitiplstart.htm" title="To restart the whole system (perform a power down and an initial program load (IPL)) the secondary partitions must power down with the primary partition.">Restart a system with 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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