89 lines
6.0 KiB
HTML
89 lines
6.0 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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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Complex save strategy" />
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<meta name="abstract" content="You have a short save window, which means that there is little or no time when your system is not being used for interactive or batch work. A very short save window requires a complex strategy for saving and for recovery." />
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<meta name="description" content="You have a short save window, which means that there is little or no time when your system is not being used for interactive or batch work. A very short save window requires a complex strategy for saving and for recovery." />
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<meta name="DC.Relation" scheme="URI" content="rzaj1savewindow.htm" />
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<meta name="DC.Relation" scheme="URI" content="../rzai8/rzai8overview.htm" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Complex save strategy</title>
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</head>
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<body id="rzaj1complexstrat"><a name="rzaj1complexstrat"><!-- --></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">Complex save strategy</h1>
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<div><p>You have a short save window, which means that there is little
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or no time when your system is not being used for interactive or batch work.
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A very short save window requires a complex strategy for saving and for recovery.</p>
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<p>You use the same tools and techniques that are described for a medium save
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strategy, but at a greater level of detail. For example, you might need to
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save specific critical files at specific times of the day or week. You might
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also want to consider using a tool, such as IBM<sup>®</sup> Backup Recovery and Media Services for iSeries™ (BRMS).</p>
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<div class="p">Saving your system while it is active is often necessary in a complex save
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strategy. The save active (SAVACT) parameter is supported on these commands:
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<ul><li>Save Library (SAVLIB)</li>
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<li>Save Object (SAVOBJ)</li>
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<li>Save Changed Objects (SAVCHGOBJ)</li>
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<li>Save Document Library Object (SAVDLO)</li>
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<li>Save (SAV)</li>
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</ul>
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</div>
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<p>If you use save-while-active support, you can significantly reduce the
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amount of time that files are made unavailable. When the system has established
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a checkpoint for all objects being saved, the objects can be made available
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for use. Save-while-active support can be used in combination with journaling
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and commitment control to simplify the recovery procedure. If you use the
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*LIB or *SYNCLIB values with the SAVACT parameter, you should use journaling
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to simplify recovery. If you use the *SYSDFN value with the SAVACT parameter,
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you must use commitment control if the library you are saving has related
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database objects. If you choose to use save-while-active support, make sure
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that you understand the process and monitor how well checkpoints are being
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established on your system.</p>
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<p>You can also reduce the amount of time that files are unavailable by performing
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save operations on more than one device at a time, or by performing <em>concurrent
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save operations</em>. For example, you can save libraries to one device, folders
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to another device, and directories to third device. Or, you can save different
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sets of libraries or objects to different devices.</p>
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<p>You can also use multiple devices simultaneously by performing a <em>parallel
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save operation</em>. To perform a parallel save operation, you need <span class="keyword">Backup Recovery and Media Services</span> or an application that allows
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you to create media definition objects.</p>
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<p>For more information about save-while-active support, concurrent save operations,
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and parallel save operations, see the Back up your server information.</p>
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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="rzaj1savewindow.htm" title="When you run save procedures, how you run save procedures and what you save depend on the size of your save window.">Find your save window</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="../rzai8/rzai8overview.htm">IBM Backup Recovery and Media Services for iSeries</a></div>
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<div><a href="../rzaiu/rzaiurzaiu311.htm">While it is active</a></div>
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<div><a href="../rzaiu/rzaiurzaiuparandcon.htm">More than one device</a></div>
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<div><a href="../rzaiu/rzaiuintro.htm">Back up your server</a></div>
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<div><a href="../rzakj/rzakjcommitkickoff.htm">Commitment control</a></div>
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<div><a href="../rzaki/rzakikickoff.htm">Journal management</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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