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<a class="WebWorks_Breadcrumb_Link" href="Maintain_Units.7.1.html#1258376">Maintaining Units</a> &gt; About Inoperable Units</div>
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<div class="Heading1"><a name="1258376">About Inoperable Units</a></div>
<div class="BodyAfterHead"><a name="1258377">Units become inoperable when there are no longer enough drives in the unit </a>for it to function. For example, a RAID 5 unit created from four drives becomes degraded if one drive fails or is removed, but becomes inoperable if two drives fail or are removed. A RAID 6 unit created from five drives becomes degraded if one or two drives is removed, but becomes inoperable if three drives fail or are removed.</div>
<div class="Body"><a name="1171313">Data on an inoperable unit cannot be accessed unless the missing drives are </a>reconnected.</div>
<div class="Body"><a name="1592935">If you have data on a unit that is currently “inoperable,” contact technical </a>support. A form is available on the web at <br /><span class="link"><a href="http://www.lsi.com/channel/ContactUs" target="_blank">http://www.lsi.com/channel/ContactUs</a></span>.</div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.15.html#1144914" name="1675254">Background Tasks</a></div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.26.html#1112466" name="1675258">Scheduling Background Tasks</a></div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.25.html#1196480" name="1675262">Background Task Prioritization</a></div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.27.html#1082252" name="1675266">Viewing Current Task Schedules</a></div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.28.html#1116708" name="1675270">Turning On or Off Use of a Rebuild/Migrate Task Schedule</a></div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.30.html#1515344" name="1675274">Removing a Task Slot from a Schedule</a></div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.31.html#1072535" name="1675278">Adding a New Task Schedule Slot</a></div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.20.html#1353024" name="1675282">Rebuilding Units</a></div>
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<div class="RelatedTopic"><a href="Maintain_Units.7.19.html#1522248" name="1675286">Starting a Verify Manually</a></div>
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