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<h1 class="topictitle1">Reducing save-outage time: Overview </h1>
<div><p>This information tells you what happens when you use the save-while-active
function to reduce your save-outage time.</p>
<p>Reducing your save-outage time is the recommended way to use
the save-while-active function. To reduce your save-outage time, you can end
the applications that make changes to the objects you are saving. You can
restart the applications when the server has established a checkpoint for
application-dependent objects.</p>
<p>An application-dependent object is any object that applications use and
update. By using the save-while-active to reduce your save-outage time, you
will have to perform no additional recovery procedures when you restore the
objects.</p>
<div class="p">You can specify to have the server send you a message when it has completed
checkpoint processing of the following: <ul><li>For all objects within a particular library</li>
<li>For all libraries in the save request</li>
</ul>
You can start the applications again when all application-dependent
objects have reached a checkpoint. The checkpoint images of the objects that
you save then appear as if you performed a dedicated save during the time
the applications were ended.</div>
<p>If you are saving objects from multiple libraries and a common application-dependency
that spans the libraries exists, do not restart the applications right away.
You should wait until checkpoint processing has completed for all the libraries
in the save request. When the checkpoint processing has completed for all
the libraries, you can then restart the applications.</p>
<p>This method can substantially reduce your save-outage time, even though
it does not eliminate it.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaiurzaiu300.htm" title="The save-while-active function allows you to use your server during all or part of the save process, that is, save your server while it is active.">Save your server while it is active</a></div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzaiurzaiu344.htm" title="Use the save-while-active function to reduce your save-outage time. This is the easiest way to use the save-while-active function.">Reduce your save-outage time</a></div>
<div><a href="rzaiurzaiu311.htm" title="How your save-while-active function fits into your backup and recovery strategy depends on whether you will reduce or eliminate your save-outage time. These pages contain information to help you decide how you will use the save-while-active function. It also contains pages with technical descriptions of the save-while-active function.">Save-while-active and your backup and recovery strategy</a></div>
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