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<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xml:lang="en" lang="en" xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta name="keywords" content="MegaRAID SAS SW UG" /> <title>Recovering and Clearing Punctured Block Entries</title> <link rel="StyleSheet" href="css/v10392197.css" type="text/css" media="all" /> <link rel="StyleSheet" href="css/webworks.css" type="text/css" media="all" /> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/context.js"></script> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/towwhdir.js"></script> <script type="text/javascript" language="JavaScript1.2" src="wwhdata/common/wwhpagef.js"></script> <script type="text/javascript" language="JavaScript1.2"> <!-- var WebWorksRootPath = ""; // --> </script> <script type="text/javascript" language="JavaScript1.2"> <!-- // Set reference to top level help frame // var WWHFrame = WWHGetWWHFrame("", true); // --> </script> <script type="text/javascript" language="JavaScript1.2" src="scripts/expand.js"></script> </head> <body onload="WWHUpdate();" onunload="WWHUnload();" onkeydown="WWHHandleKeyDown((document.all||document.getElementById||document.layers)?event:null);" onkeypress="WWHHandleKeyPress((document.all||document.getElementById||document.layers)?event:null);" onkeyup="WWHHandleKeyUp((document.all||document.getElementById||document.layers)?event:null);"> <br /> <div class="WebWorks_Breadcrumbs" style="text-align: left;"> <a class="WebWorks_Breadcrumb_Link" href="MSM_MR_help-4-01.html">Configuration</a> : Recovering and Clearing Punctured Block Entries</div> <hr align="left" /> <blockquote> <p class="Heading_1"><a name="3_8_18_1">Recovering and Clearing Punctured Block Entries</a></p> <p class="Body"><a name="3_8_18_3_1_2">You can recover and clear the punctured block area of a virtual drive.</a></p> <p class="attention"> <span style="font-family: Sans-Serif; font-weight: bold">ATTENTION </span><a name="3_8_18_3_1_3">This operation removes any data stored on the physical drives. Back up the good data on the drives before making any changes to the configuration.</a></p> <p class="Body"><a name="3_8_18_3_1_4">When a Patrol Read or a Rebuild operation encounters a media error on the source drive, it punctures a block on the target drive to prevent the use of the data with the invalid parity. Any subsequent read operation to the punctured block completes but with an error. Consequently, the puncturing of a block prevents any invalid parity generation later while using this block.</a></p> <p class="Body"><a name="3_8_18_3_1_5">To recover or clear the punctured block area of a virtual drive, run a Slow (or Full) Initialization to zero out and regenerate new parity causing all bad block entries to be removed from the bad block table.</a></p> <p class="Body"><a name="3_8_18_3_1_6">To run a Slow (or Full) Initialization, see </a><span class="fm_003aParaText"><a href="javascript:WWHClickedPopup('MSM_MR_help', 'MSM_MR_help-4-03a.html', '');" title="Selecting Virtual Drive Settings">Selecting Virtual Drive Settings</a></span>.</p> <script type="text/javascript" language="JavaScript1.2"> <!-- // Clear related topics // WWHClearRelatedTopics(); document.writeln(WWHRelatedTopicsInlineHTML()); // --> </script> </blockquote> <hr align="left" /> <!-- LSI changed location of company info to align left --> <!-- Added rol from 2011.3 pages.asp file --> <!-- LSI added copyright style --> <!-- --> <table align="left" role="presentation"> <!-- LSI added support for booknum and reldate --> <!-- --> <tr> <td class="copyright">DB09000202-21, Rev 2.2, July 2015</td> </tr> <tr> <td class="copyright"> <a href="http://www.lsi.com/Pages/trademark.aspx?" target="external_window">Copyright© 2015 by Avago Technologies. All rights reserved.</a> </td> </tr> </table> <script type="text/javascript" language="JavaScript1.2"> <!-- document.write(WWHRelatedTopicsDivTag() + WWHPopupDivTag() + WWHALinksDivTag()); // --> </script> </body> </html>
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