56 lines
3.2 KiB
HTML
56 lines
3.2 KiB
HTML
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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="Hardware considerations for saving storage" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<title>Hardware considerations for saving storage</title>
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</head>
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<body id="rzaiu244"><a name="rzaiu244"><!-- --></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">Hardware considerations for saving storage</h1>
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<div><p>The following list explains limitations of hardware during a save storage
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procedure:</p>
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<ul><li>If the tape unit supports hardware data compression, then tape unit uses
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hardware data compression. If the tape unit does not support device data
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compression, then you may use programming data compression. Generally if the
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tape unit device operates faster than possible for data compression, the tape
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unit writes data without compression to the device.</li>
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<li>The server only uses one tape unit.</li>
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<li>The save storage process does not start unless all of the configured disk
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units are operating.</li>
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<li>The server cannot use some tape units as an alternate IPL device. In these
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cases, you cannot use these tape units to restore the Licensed Internal Code
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and the Licensed Internal Code PTFs from the save storage tape.</li>
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<li>The disk configuration of the restoring server must be the same as the
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disk configuration of the saving server. The disk types and models must be
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the same or equivalent with some additional devices. Serial numbers and physical
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addresses do not have to be the same. All disk units that were saved are required
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for the restore operation.</li>
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<li><img src="./delta.gif" alt="Start of change" />A virtual tape device cannot be used.<img src="./deltaend.gif" alt="End of change" /></li>
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</ul>
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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="rzaiurzaiu240.htm">Save storage (Licensed Internal Code data and disk unit data)</a></div>
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</div>
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</div>
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