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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="Content-Script-Type" content="text/javascript" /> <title>Backing Up and Recovering Voting Disks</title> <meta name="generator" content="Oracle DARB XHTML Converter (Mode = ohj/ohw) - Version 5.1 Build 135" /> <meta name="date" content="2009-06-04T14:31:50Z" /> <meta name="robots" content="noarchive" /> <meta name="doctitle" content="Backing Up and Recovering Voting Disks" /> <meta name="relnum" content="11g Release 2 (11.2)" /> <meta name="partnum" content="E10743-01" /> <link rel="copyright" href="./dcommon/html/cpyr.htm" title="Copyright" type="text/html" /> <link rel="stylesheet" href="./dcommon/css/blafdoc.css" title="Oracle BLAFDoc" type="text/css" /> <link rel="contents" href="toc.htm" title="Contents" type="text/html" /> <link rel="prev" href="tdprc_bur_votingdisk.htm" title="Previous" type="text/html" /> <link rel="next" href="tdprc_backup_votingdisk.htm" title="Next" type="text/html" /> <script src="./callback.js" type="text/javascript"></script> <noscript>Your browser does not support JavaScript. This help page requires JavaScript to render correctly.</noscript> </head> <body> <div class="zz-skip-header"><a href="#BEGIN">Skip Headers</a></div> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr valign="bottom"> <td align="left"></td> <td align="center"><a href="tdprc_bur_votingdisk.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdprc_backup_votingdisk.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> <p><a id="TDPRC226" name="TDPRC226"></a></p> <div class="sect2"><!-- infolevel="all" infotype="General" --><a id="sthref178" name="sthref178"></a> <h1>About Backing Up and Recovering Voting Disks</h1> <a name="BEGIN" id="BEGIN"></a> <p>The voting disk records node membership information. A node must be able to access more than half of the voting disks at any time. To avoid simultaneous loss of multiple voting disks, each voting disk should be on a storage device that does not share any components (controller, interconnect, and so on) with the storage devices used for the other voting disks.</p> <p><a id="sthref179" name="sthref179"></a>For example, if you have five voting disks configured, then a node must be able to access at least three of the voting disks at any time. If a node cannot access the minimum required number of voting disks it is <span class="italic">evicted</span>, or removed, from the cluster. After the cause of the failure has been corrected and access to the voting disks has been restored, you can instruct Oracle Clusterware to recover the failed node and restore it to the cluster.</p> <p>This section contains the following topics:</p> <ul> <li> <p><a href="tdprc_backup_votingdisk.htm#BEJGHFBJ">Backing Up Voting Disks</a></p> </li> <li> <p><a href="tdprc_recover_votingdisk.htm#BEJBBIDH">Recovering Voting Disks</a></p> </li> </ul> <div class="helpinfonotealso"> <h2>Related Topics</h2> <p><a href="tdprc_about_crs_rac.htm#CJHGEJGJ">About Oracle Grid Infrastructure and Oracle RAC</a></p> <p><a href="tdprc_perform_backup.htm#CEGBGIDB">Performing Backups of Your Oracle RAC Database</a></p> </div> <p>If you lose all copies of the voting disk and do not have a backup, the only safe way to re-create the voting disk is to reinstall Oracle Clusterware. Having a backup of the voting disk can drastically simplify the recovery of your system.</p> </div> <!-- class="sect2" --> <!-- Start Footer --> <div class="footer"> <table class="simple oac_no_warn" summary="" cellspacing="0" cellpadding="0" width="100%"> <col width="86%" /> <col width="*" /> <tr> <td align="left"><span class="copyrightlogo">Copyright © 2006, 2009, Oracle and/or its affiliates. All rights reserved.</span><br /> <a href="./dcommon/html/cpyr.htm"><span class="copyrightlogo">Legal Notices</span></a></td> <td align="center"><a href="tdprc_bur_votingdisk.htm"><img src="./dcommon/gifs/leftnav.gif" alt="Previous" /><br /> <span class="icon">Previous</span></a> </td> <td align="center"><a href="tdprc_backup_votingdisk.htm"><img src="./dcommon/gifs/rightnav.gif" alt="Next" /><br /> <span class="icon">Next</span></a></td> </tr> </table> </div> <!-- class="footer" --> </body> </html>
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