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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" /> <!-- MOTW-DISABLED saved from url=(0014)about:internet --> <meta name="keywords" /> <title>DDR Offload</title> <link rel="StyleSheet" href="css/v7720452.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="Nytro_topic_1.html#3_4_6_16_1">Nytro MegaRAID Revision 1.7 Overview</a> : <a class="WebWorks_Breadcrumb_Link" href="Nytro_topic_1_1.html#3_4_6_16_1">Nytro MegaRAID Controller Features and Benefits</a> : DDR Offload</div> <hr align="left" /> <blockquote> <p class="Heading_2"><a name="3_4_6_16_1">DDR Offload</a></p> <p class="Body"><a name="3_4_6_16_3_1">DDR Offloading or Protection is a method to protect the entire content of the controller’s main memory (DDR3) onto the Nytro Flash modules at the time of unexpected power failure. This method helps protect the data on RAM, from power failure to save the user data and controller’s metadata onto Nytro Flash modules, and to restore when the power gets restored. A SuperCap (capacitor) is used to provide power to the controller when the system power is lost for a short period required to vault the RAM content. All the Nytro Flash modules on the controller board have some space reserved for offloading. When the system power is back, the controller’s memory is restored from this offload space on the Nytro Flash module.</a></p> <p class="caution"> <span style="font-family: Sans-Serif; font-weight: bold">CAUTION </span><a name="3_4_6_16_3_2">Do not hot plug the SuperCap when power is supplied to the controller card or if there is residual charge on the SuperCap, doing so might damage both the SuperCap and the controller board.</a></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">DB15-000988-08-December 2013</td> </tr> <tr> <td class="copyright"> <a href="http://www.lsi.com/Pages/trademark.aspx?" target="external_window">Copyright© 2013 by LSI Corporation. 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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