64 lines
3.9 KiB
HTML
64 lines
3.9 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.Title" content="CPYOPT requirements to volume type *PRIMARY" />
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<meta name="abstract" content="When the target volume is type *PRIMARY, the CPYOPT command has the following unique requirements:" />
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<meta name="description" content="When the target volume is type *PRIMARY, the CPYOPT command has the following unique requirements:" />
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<title>CPYOPT requirements to volume type *PRIMARY</title>
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</head>
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<body id="rzam4cpyoptreqsprmy"><a name="rzam4cpyoptreqsprmy"><!-- --></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">CPYOPT requirements to volume type *PRIMARY</h1>
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<div><p>When the target volume is type *PRIMARY, the CPYOPT command has
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the following unique requirements:</p>
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<ul><li>The source volume can be either type *PRIMARY or *BACKUP.</li>
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<li>Because the target volume is *PRIMARY, all API requests and most optical
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commands and utilities can access the volume.</li>
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<li>Because utilities and user programs can update the *PRIMARY volume, you
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need to determine how to protect directories and files from unauthorized change
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or deletion.</li>
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<li>The target volume could contain information for one or multiple optical
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*PRIMARY volumes. An easy way to manage multiple volumes on a single target
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volume would be to have a new first level directory. That directory name could
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be the name of the source-primary volume.</li>
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<li>You need a way of keeping track of when a volume or directory was last
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backed up. Use the CPYOPT command to do it automatically.</li>
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<li>The hierarchical structure on the target volume does not need to be identical
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to that of the optical *PRIMARY volume.</li>
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<li>The create date and time, and change date and time, of the file on the
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target volume will be different than their counterparts on the optical primary
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volume. The file creation data and time on the target volume is the date that
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the file was written.</li>
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<li>You can use directories and files on the target *PRIMARY volume directly.
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You do not have to copy applications back to a *PRIMARY optical volume.</li>
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<li>You can request that the system copy only new files on the source volume
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to the target volume. This might be useful if you never changes files on your
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source volume but only create new ones.</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="rzam4usecpyopbckupvol.htm" title="You can use the Copy Optical (CPYOPT) command to do a complete or partial copy of your volume.">Use CPYOPT to backup a volume</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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