306 lines
20 KiB
HTML
306 lines
20 KiB
HTML
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<meta name="DC.Title" content="Uninterruptible power supply delay time system value (QUPSDLYTIM)" />
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<meta name="abstract" content="QUPSDLYTIM is the system value for the Uninterruptible power supply delay timer." />
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<meta name="description" content="QUPSDLYTIM is the system value for the Uninterruptible power supply delay timer." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>Uninterruptible power supply delay time system value (QUPSDLYTIM)</title>
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</head>
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<body id="rzahrdlytimco"><a name="rzahrdlytimco"><!-- --></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">Uninterruptible power supply delay time system value (QUPSDLYTIM)</h1>
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<div><p>QUPSDLYTIM is the system value for the Uninterruptible power supply
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delay timer.</p>
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<p>The value of QUPSDLYTIM controls the length of time that the system waits
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before saving main storage and powering down the system. If utility power
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is restored before the wait time ends, the system resets the timer. If the
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wait time is exceeded, the system begins to save main storage and goes into
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a controlled shutdown.</p>
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<p>The three choices for the QUPSDLYTIM value are as follows:</p>
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<ul><li>*BASIC or *CALC</li>
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<li>A numeric value</li>
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<li>*NOMAX.</li>
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</ul>
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<div class="p">The time that is specified by the QUPSDLYTIM system may be one of the following:
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<ul><li>Infinite if QUPSDLYTIM is set to *NOMAX (must have a power-handling program).</li>
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<li>A fixed internal delay if QUPSDLYTIM is set to *BASIC or *CALC.</li>
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<li>An alternate value that is specified by QUPSDLYTIM. The value must be
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a positive number, specifying seconds (zero means no delay).</li>
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</ul>
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</div>
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<p>If you set QUPSDLYTIM to *NOMAX, the following conditions must be met or
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the system begins an immediate shut down:</p>
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<ul><li>The message queue specified in the QUPSMSGQ system value must exist.</li>
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<li>If the message queue is a workstation message queue (or QSYSOPR), it must
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be in break or notify mode.</li>
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<li>If the message queue is not a workstation message queue, it must be allocated
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by a job.</li>
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</ul>
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<p>The figure displays these choices and their implications.</p>
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<div class="fignone" id="rzahrdlytimco__dlytm"><a name="rzahrdlytimco__dlytm"><!-- --></a><span class="figcap">Figure 1. QUPSDLYTIM Values and Actions</span><br /><img src="rv4n350.gif" alt="Flowchart for QUPSDLYTIM values and actions" /><br /></div>
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<p>The default value for QUPSDLYTIM is *CALC. Leaving QUPSDLYTIM set to *CALC
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may defeat the purpose of having an uninterruptible power supply. *BASIC and
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*CALC provide the same function in systems that are running V3R6 or later
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releases of the operating system.</p>
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<p>If QUPSDLYTIM is set to *BASIC or *CALC, the system will perform a controlled
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shutdown after a fixed interval delay of 200 seconds. If you have an uninterruptible
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power supply, you can specify a numeric value. </p>
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<div class="section" id="rzahrdlytimco__QUPSDLYTIM"><a name="rzahrdlytimco__QUPSDLYTIM"><!-- --></a><h4 class="sectiontitle">Determining the Value of QUPSDLYTIM</h4><p>To
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determine the value of QUPSDLYTIM you need to know the following:</p>
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<ul><li>The hold-up time of your uninterruptible power supply at the given load
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(the battery-rated time).</li>
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<li>The amount of time it takes your system to save main storage and power
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down.</li>
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</ul>
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<p>Available Battery Runtime</p>
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<p>The available battery runtime is a
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dynamic variable. Evaluate your system's available battery with these questions:</p>
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<ul><li>Has the power been fluctuating?</li>
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<li>Has the battery been previously discharged?</li>
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<li>Is the battery fully charged?</li>
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</ul>
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<p>The actual battery runtime is a function of capacity. Even if the
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battery is fully charged, it may not have 100% capacity. A typical battery
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will lose 20% to 50% of its rated capacity in 4 to 5 years, depending on ambient
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room temperatures. Elevated operating temperatures tend to increase the loss
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of capacity. The actual battery runtime is also a function of the discharge
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load. The more loads the uninterruptible power supplyserves the less time
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it can sustain them. When the battery on the system falls below a specific
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level of charge, the UPS will issue a weak battery condition signal. The Weak
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battery condition signal from uninterruptible power supply affects the shutdown
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mechanisms.</p>
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<p>The time it takes to save main storage and power-down is
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not an exact number. Save time depends on the number of changes in main storage
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that have not been written to disk. The number of disk arms available is also
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a factor; the more disk arms, the faster the system can write main storage
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to disk. The system power-down will also depend on the number of jobs and
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the average amount of time it takes to end them. Typically a job will be close
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to an instruction boundary; however, some instructions are long running. The
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following formula shows a worst case scenario in estimating the number of
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minutes it will take to shut down a system:</p>
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<pre> ((0.0554*(MS size in MB))/(# of disk arms)) + 1.6 = # of minutes</pre>
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<p>Refer
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to the following table for an estimate of time required to write main storage
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to disk on your particular system. The typical amount of time required to
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shut down a system will typically be a small percentage of this value.</p>
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<div class="tablenoborder"><a name="rzahrdlytimco__writetime"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rzahrdlytimco__writetime" frame="border" border="1" rules="all"><caption>Table 1. Time needed in minutes to write
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main storage to disk</caption><thead align="left"><tr><th align="left" valign="top" width="5.841121495327103%" id="d0e112">Arms</th>
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<th valign="top" width="5.841121495327103%" id="d0e114">32MB</th>
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<th valign="top" width="6.386292834890965%" id="d0e116">64MB</th>
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<th valign="top" width="8.333333333333332%" id="d0e118">128MB</th>
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<th valign="top" width="8.333333333333332%" id="d0e120">256MB</th>
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<th valign="top" width="7.8660436137071645%" id="d0e122">512MB</th>
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<th valign="top" width="5.685358255451713%" id="d0e124">1GB</th>
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<th valign="top" width="6.1526479750778815%" id="d0e126">2GB</th>
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<th valign="top" width="5.996884735202492%" id="d0e128">4GB</th>
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<th valign="top" width="6.931464174454828%" id="d0e130">8GB</th>
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<th valign="top" width="8.09968847352025%" id="d0e132">16GB</th>
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<th valign="top" width="8.333333333333332%" id="d0e134">32GB</th>
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<th valign="top" width="8.09968847352025%" id="d0e136">64GB</th>
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<th valign="top" width="8.09968847352025%" id="d0e138">128GB</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">2</td>
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<td valign="top" width="5.841121495327103%" headers="d0e114 ">2.5 </td>
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<td valign="top" width="6.386292834890965%" headers="d0e116 ">3.4</td>
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<td valign="top" width="8.333333333333332%" headers="d0e118 ">5.1</td>
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<td valign="top" width="8.333333333333332%" headers="d0e120 ">8.7</td>
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<td valign="top" width="7.8660436137071645%" headers="d0e122 ">15.8</td>
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<td valign="top" width="5.685358255451713%" headers="d0e124 ">30.0</td>
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<td valign="top" width="6.1526479750778815%" headers="d0e126 ">58.4</td>
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<td valign="top" width="5.996884735202492%" headers="d0e128 ">115.1</td>
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<td valign="top" width="6.931464174454828%" headers="d0e130 ">228.7</td>
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<td valign="top" width="8.09968847352025%" headers="d0e132 "> </td>
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<td valign="top" width="8.333333333333332%" headers="d0e134 "> </td>
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<td valign="top" width="8.09968847352025%" headers="d0e136 "> </td>
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<td valign="top" width="8.09968847352025%" headers="d0e138 "> </td>
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</tr>
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<tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">4</td>
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<td valign="top" width="5.841121495327103%" headers="d0e114 ">2.0</td>
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<td valign="top" width="6.386292834890965%" headers="d0e116 ">2.5</td>
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<td valign="top" width="8.333333333333332%" headers="d0e118 ">3.4</td>
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<td valign="top" width="8.333333333333332%" headers="d0e120 ">5.1</td>
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<td valign="top" width="7.8660436137071645%" headers="d0e122 ">8.7</td>
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<td valign="top" width="5.685358255451713%" headers="d0e124 ">15.8</td>
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<td valign="top" width="6.1526479750778815%" headers="d0e126 ">30.0</td>
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<td valign="top" width="5.996884735202492%" headers="d0e128 ">58.4</td>
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<td valign="top" width="6.931464174454828%" headers="d0e130 ">115.1</td>
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<td valign="top" width="8.09968847352025%" headers="d0e132 ">228.7</td>
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<td valign="top" width="8.333333333333332%" headers="d0e134 "> </td>
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<td valign="top" width="8.09968847352025%" headers="d0e136 "> </td>
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<td valign="top" width="8.09968847352025%" headers="d0e138 "> </td>
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</tr>
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<tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">8</td>
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<td valign="top" width="5.841121495327103%" headers="d0e114 ">1.8</td>
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<td valign="top" width="6.386292834890965%" headers="d0e116 ">2.0</td>
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<td valign="top" width="8.333333333333332%" headers="d0e118 ">2.5</td>
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<td valign="top" width="8.333333333333332%" headers="d0e120 ">3.4</td>
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<td valign="top" width="7.8660436137071645%" headers="d0e122 ">5.1</td>
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<td valign="top" width="5.685358255451713%" headers="d0e124 ">8.7</td>
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<td valign="top" width="6.1526479750778815%" headers="d0e126 ">15.8</td>
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<td valign="top" width="5.996884735202492%" headers="d0e128 ">30.0</td>
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<td valign="top" width="6.931464174454828%" headers="d0e130 ">58.4</td>
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<td valign="top" width="8.09968847352025%" headers="d0e132 ">115.1</td>
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<td valign="top" width="8.333333333333332%" headers="d0e134 ">228.7</td>
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<td valign="top" width="8.09968847352025%" headers="d0e136 "> </td>
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<td valign="top" width="8.09968847352025%" headers="d0e138 "> </td>
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</tr>
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<tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">16</td>
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<td valign="top" width="5.841121495327103%" headers="d0e114 ">1.7</td>
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<td valign="top" width="6.386292834890965%" headers="d0e116 ">1.8</td>
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<td valign="top" width="8.333333333333332%" headers="d0e118 ">2.0</td>
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<td valign="top" width="8.333333333333332%" headers="d0e120 ">2.5</td>
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<td valign="top" width="7.8660436137071645%" headers="d0e122 ">3.4</td>
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<td valign="top" width="5.685358255451713%" headers="d0e124 ">5.1</td>
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<td valign="top" width="6.1526479750778815%" headers="d0e126 ">8.7</td>
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<td valign="top" width="5.996884735202492%" headers="d0e128 ">15.8</td>
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<td valign="top" width="6.931464174454828%" headers="d0e130 ">30.0</td>
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<td valign="top" width="8.09968847352025%" headers="d0e132 ">58.4</td>
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<td valign="top" width="8.333333333333332%" headers="d0e134 ">115.1</td>
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<td valign="top" width="8.09968847352025%" headers="d0e136 ">228.7</td>
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<td valign="top" width="8.09968847352025%" headers="d0e138 "> </td>
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</tr>
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<tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">32</td>
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<td valign="top" width="5.841121495327103%" headers="d0e114 ">1.6</td>
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<td valign="top" width="6.386292834890965%" headers="d0e116 ">1.7</td>
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<td valign="top" width="8.333333333333332%" headers="d0e118 ">1.8</td>
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<td valign="top" width="8.333333333333332%" headers="d0e120 ">2.0</td>
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<td valign="top" width="7.8660436137071645%" headers="d0e122 ">2.5</td>
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<td valign="top" width="5.685358255451713%" headers="d0e124 ">3.4</td>
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<td valign="top" width="6.1526479750778815%" headers="d0e126 ">5.1</td>
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<td valign="top" width="5.996884735202492%" headers="d0e128 ">8.7</td>
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<td valign="top" width="6.931464174454828%" headers="d0e130 ">15.8</td>
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<td valign="top" width="8.09968847352025%" headers="d0e132 ">30.0</td>
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<td valign="top" width="8.333333333333332%" headers="d0e134 ">58.4</td>
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<td valign="top" width="8.09968847352025%" headers="d0e136 ">115.1</td>
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<td valign="top" width="8.09968847352025%" headers="d0e138 ">228.7</td>
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</tr>
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<tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">64</td>
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<td valign="top" width="5.841121495327103%" headers="d0e114 "> </td>
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<td valign="top" width="6.386292834890965%" headers="d0e116 ">1.6</td>
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<td valign="top" width="8.333333333333332%" headers="d0e118 ">1.7</td>
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<td valign="top" width="8.333333333333332%" headers="d0e120 ">1.8</td>
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<td valign="top" width="7.8660436137071645%" headers="d0e122 ">2.0</td>
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<td valign="top" width="5.685358255451713%" headers="d0e124 ">2.5</td>
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<td valign="top" width="6.1526479750778815%" headers="d0e126 ">3.4</td>
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<td valign="top" width="5.996884735202492%" headers="d0e128 ">5.1</td>
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<td valign="top" width="6.931464174454828%" headers="d0e130 ">8.7</td>
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<td valign="top" width="8.09968847352025%" headers="d0e132 ">15.8</td>
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<td valign="top" width="8.333333333333332%" headers="d0e134 ">30.0</td>
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<td valign="top" width="8.09968847352025%" headers="d0e136 ">58.4</td>
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<td valign="top" width="8.09968847352025%" headers="d0e138 ">115.1</td>
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</tr>
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<tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">128</td>
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<td valign="top" width="5.841121495327103%" headers="d0e114 "> </td>
|
||
|
|
<td valign="top" width="6.386292834890965%" headers="d0e116 "> </td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e118 ">1.6</td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e120 ">1.7</td>
|
||
|
|
<td valign="top" width="7.8660436137071645%" headers="d0e122 ">1.8</td>
|
||
|
|
<td valign="top" width="5.685358255451713%" headers="d0e124 ">2.0</td>
|
||
|
|
<td valign="top" width="6.1526479750778815%" headers="d0e126 ">2.5</td>
|
||
|
|
<td valign="top" width="5.996884735202492%" headers="d0e128 ">3.4</td>
|
||
|
|
<td valign="top" width="6.931464174454828%" headers="d0e130 ">5.1</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e132 ">8.7</td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e134 ">15.8</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e136 ">30.0</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e138 ">58.4</td>
|
||
|
|
</tr>
|
||
|
|
<tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">256</td>
|
||
|
|
<td valign="top" width="5.841121495327103%" headers="d0e114 "> </td>
|
||
|
|
<td valign="top" width="6.386292834890965%" headers="d0e116 "> </td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e118 "> </td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e120 ">1.6</td>
|
||
|
|
<td valign="top" width="7.8660436137071645%" headers="d0e122 ">1.7</td>
|
||
|
|
<td valign="top" width="5.685358255451713%" headers="d0e124 ">1.8</td>
|
||
|
|
<td valign="top" width="6.1526479750778815%" headers="d0e126 ">2.0</td>
|
||
|
|
<td valign="top" width="5.996884735202492%" headers="d0e128 ">2.5</td>
|
||
|
|
<td valign="top" width="6.931464174454828%" headers="d0e130 ">3.4</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e132 ">5.1</td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e134 ">8.7</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e136 ">15.8</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e138 ">30.0</td>
|
||
|
|
</tr>
|
||
|
|
<tr><td valign="top" width="5.841121495327103%" headers="d0e112 ">512</td>
|
||
|
|
<td valign="top" width="5.841121495327103%" headers="d0e114 "> </td>
|
||
|
|
<td valign="top" width="6.386292834890965%" headers="d0e116 "> </td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e118 "> </td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e120 "> </td>
|
||
|
|
<td valign="top" width="7.8660436137071645%" headers="d0e122 ">1.6</td>
|
||
|
|
<td valign="top" width="5.685358255451713%" headers="d0e124 ">1.7</td>
|
||
|
|
<td valign="top" width="6.1526479750778815%" headers="d0e126 ">1.8</td>
|
||
|
|
<td valign="top" width="5.996884735202492%" headers="d0e128 ">2.0</td>
|
||
|
|
<td valign="top" width="6.931464174454828%" headers="d0e130 ">2.5</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e132 ">3.4</td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e134 ">5.1</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e136 ">8.7</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e138 ">15.8</td>
|
||
|
|
</tr>
|
||
|
|
<tr><td align="left" valign="top" width="5.841121495327103%" headers="d0e112 ">1024</td>
|
||
|
|
<td valign="top" width="5.841121495327103%" headers="d0e114 "> </td>
|
||
|
|
<td valign="top" width="6.386292834890965%" headers="d0e116 "> </td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e118 "> </td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e120 "> </td>
|
||
|
|
<td valign="top" width="7.8660436137071645%" headers="d0e122 "> </td>
|
||
|
|
<td valign="top" width="5.685358255451713%" headers="d0e124 ">1.6</td>
|
||
|
|
<td valign="top" width="6.1526479750778815%" headers="d0e126 ">1.7</td>
|
||
|
|
<td valign="top" width="5.996884735202492%" headers="d0e128 ">1.8</td>
|
||
|
|
<td valign="top" width="6.931464174454828%" headers="d0e130 ">2.0</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e132 ">2.5</td>
|
||
|
|
<td valign="top" width="8.333333333333332%" headers="d0e134 ">3.4</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e136 ">5.1</td>
|
||
|
|
<td valign="top" width="8.09968847352025%" headers="d0e138 ">8.7</td>
|
||
|
|
</tr>
|
||
|
|
<tr><td colspan="14" valign="top" headers="d0e112 d0e114 d0e116 d0e118 d0e120 d0e122 d0e124 d0e126 d0e128 d0e130 d0e132 d0e134 d0e136 d0e138 ">Assumes all pages in main storage
|
||
|
|
have been modified and changes have not yet been written to disk. Proportionately
|
||
|
|
less time is required if fewer pages need to be written to disk.</td>
|
||
|
|
</tr>
|
||
|
|
</tbody>
|
||
|
|
</table>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
<div>
|
||
|
|
<ul class="ullinks">
|
||
|
|
<li class="ulchildlink"><strong><a href="rzahrqupsdlytimexplain.htm">Explanation for QUPSDLYTIM values and actions flow chart</a></strong><br />
|
||
|
|
</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
|
<div class="familylinks">
|
||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahrconcepts.htm" title="Before you use a power-handling program to control system shutdown, you may want to familiarize yourself with related concepts.">Controlled shutdown concepts</a></div>
|
||
|
|
</div>
|
||
|
|
<div class="relconcepts"><strong>Related concepts</strong><br />
|
||
|
|
<div><a href="rzahrphpgmco.htm" title="System software support is essentially the same for both the battery feature and the uninterruptible power supply attachment.">Enabling a power-handling program to control system activity during a power interruption</a></div>
|
||
|
|
<div><a href="rzahrnopgmco.htm" title="Use this topic to learn about considerations when you are not a power-handling program to handle controlled system shutdown.">Handling uninterruptible power supply conditions when no power-handling program exists</a></div>
|
||
|
|
<div><a href="rzahrctldwnco.htm" title="The power loss-controlled shutdown mechanism allows the system to shut down in an orderly fashion following a loss of utility power. The power loss-controlled shutdown mechanism is available only if you connected the system to an uninterruptible power supply.">Power loss controlled shutdown</a></div>
|
||
|
|
<div><a href="rzahrupsco.htm" title="An uninterruptible power supply provides a source of ac power if utility power should fail. Typically, uninterruptible power supplies have a finite backup time.">Uninterruptible power supply</a></div>
|
||
|
|
<div><a href="rzahrwkbatco.htm" title="When the battery on the system falls below a specific level of charge, the uninterruptible power supply will issue a weak battery condition signal.">Weak battery condition signal from uninterruptible power supply</a></div>
|
||
|
|
</div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|