diff --git a/docs/sdrs/umn/en-us_topic_0288665269.html b/docs/sdrs/umn/en-us_topic_0288665269.html
index 78e14d65..e7d99013 100644
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+++ b/docs/sdrs/umn/en-us_topic_0288665269.html
@@ -1,4 +1,27 @@
-<a name="EN-US_TOPIC_0288665269"></a><a name="EN-US_TOPIC_0288665269"></a>
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+<meta name="DC.Title" content="Change History">
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+<title>Change History</title>
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+<body style="clear:both; padding-left:10px; padding-top:5px; padding-right:5px; padding-bottom:5px"><a name="EN-US_TOPIC_0288665269"></a><a name="EN-US_TOPIC_0288665269"></a>
 
 <h1 class="topictitle1">Change History</h1>
 <div id="body1524131040726">
@@ -8,7 +31,12 @@
 </th>
 </tr>
 </thead>
-<tbody><tr id="EN-US_TOPIC_0288665269__row0656216105820"><td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0288665269__p1165715164582">2022-08-31</p>
+<tbody><tr id="EN-US_TOPIC_0288665269__row16186134014460"><td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0288665269__p018694044610">2023-10-20</p>
+</td>
+<td class="cellrowborder" valign="top" width="81%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0288665269__p618624011467">Optimized some descriptions.</p>
+</td>
+</tr>
+<tr id="EN-US_TOPIC_0288665269__row0656216105820"><td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0288665269__p1165715164582">2022-08-31</p>
 </td>
 <td class="cellrowborder" valign="top" width="81%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0288665269__p12657101615819">Deleted the yearly/monthly billing from corresponding parameter descriptions.</p>
 </td>
@@ -34,7 +62,7 @@
 <tr id="EN-US_TOPIC_0288665269__row28723593712"><td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0288665269__p18738591572">2019-08-29</p>
 </td>
 <td class="cellrowborder" valign="top" width="81%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0288665269__p8225112411815">Added the following content:</p>
-<ul id="EN-US_TOPIC_0288665269__ul192251624381"><li id="EN-US_TOPIC_0288665269__li1122518241181">Added the tag function in <a href="sdrs_ug_pi_0008.html">Managing Protected Instance Tags</a>.</li><li id="EN-US_TOPIC_0288665269__li110951521719"><a href="sdrs_06_0404.html">What Can I Do If hostname of the Production Site Server and DR Site Server Are Different After a Planned Failover or Failover?</a></li></ul>
+<ul id="EN-US_TOPIC_0288665269__ul192251624381"><li id="EN-US_TOPIC_0288665269__li1122518241181">Added the tag function in <a href="sdrs_ug_pi_0008.html">Managing Protected Instance Tags</a>.</li><li id="EN-US_TOPIC_0288665269__li110951521719"><a href="sdrs_06_0404.html">What Can I Do If hostname of the Production Site Server and DR Site Server Are Different After a Switchover or Failover?</a></li></ul>
 <p id="EN-US_TOPIC_0288665269__p1222572413811">Modified the following content:</p>
 <ul id="EN-US_TOPIC_0288665269__ul02252241685"><li id="EN-US_TOPIC_0288665269__li172021413121517">Modified <strong id="EN-US_TOPIC_0288665269__b1095315238297">Enable Protection Again</strong> to <strong id="EN-US_TOPIC_0288665269__b1134542917293">Reprotect</strong> in <a href="sdrs_ug_pg_0006.html">Performing Reprotection</a>.</li><li id="EN-US_TOPIC_0288665269__li15225124281">Deleted the restriction that the specifications of the DR site server must be consistent with those of the production site server in <a href="en-us_topic_0110981899.html">Constraints</a>.</li></ul>
 </td>
@@ -64,7 +92,7 @@
 <ul id="EN-US_TOPIC_0288665269__ul11354116192714"><li id="EN-US_TOPIC_0288665269__li8355868277">What Are the Standards of DR?</li><li id="EN-US_TOPIC_0288665269__li6852111613272">What Can I Do If an Error Occurred When I Expand the Replication Pair Capacity?</li><li id="EN-US_TOPIC_0288665269__li8907182520279">What Can I Do When My Protection Group Quotas Are Insufficient?</li></ul>
 <p id="EN-US_TOPIC_0288665269__p762515712273">Modified the following content:</p>
 <ul id="EN-US_TOPIC_0288665269__ul105717461892"><li id="EN-US_TOPIC_0288665269__li05834616910">Added a note in <a href="en-us_topic_0122528555.html">Performing a DR Drill</a>.</li><li id="EN-US_TOPIC_0288665269__li1918164418495">Adjusted the structure in <a href="sdrs_ug_0000.html">Management</a>.</li><li id="EN-US_TOPIC_0288665269__li1968633364112">Optimized descriptions in <a href="en-us_topic_0110273585.html">Modifying Specifications of a Protected Instance</a>.</li><li id="EN-US_TOPIC_0288665269__li1767919356819">Replaced screenshots in <a href="sdrs_ug_rp_0003.html">Deleting a Replication Pair</a>.</li></ul>
-<ul id="EN-US_TOPIC_0288665269__ul310992162812"><li id="EN-US_TOPIC_0288665269__li14815215152815"><a href="sdrs_06_0402.html">What Can I Do When the EIP Cannot Be Pinged After I Perform a Planned Failover for a Protection Group Containing a SUSE Server?</a></li><li id="EN-US_TOPIC_0288665269__li16494142982814"><a href="sdrs_06_0403.html">What Can I Do If the NIC Names of the DR Drill Server and Production Site Server Are Different?</a></li></ul>
+<ul id="EN-US_TOPIC_0288665269__ul310992162812"><li id="EN-US_TOPIC_0288665269__li14815215152815"><a href="sdrs_06_0402.html">What Can I Do When the EIP Cannot Be Pinged After I Perform a Switchover for a Protection Group Containing a SUSE Server?</a></li><li id="EN-US_TOPIC_0288665269__li16494142982814"><a href="sdrs_06_0403.html">What Can I Do If the NIC Names of the DR Drill Server and Production Site Server Are Different?</a></li></ul>
 </td>
 </tr>
 <tr id="EN-US_TOPIC_0288665269__row482916286113"><td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0288665269__p283072817114">2019-04-17</p>
@@ -99,7 +127,7 @@
 <td class="cellrowborder" valign="top" width="81%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0288665269__p13527719153611">Added the following content:</p>
 <p id="EN-US_TOPIC_0288665269__p1199816226369">A note in <a href="en-us_topic_0110037559.html">Creating a Replication Pair</a></p>
 <p id="EN-US_TOPIC_0288665269__p64251751193415">Modified the following content:</p>
-<ul id="EN-US_TOPIC_0288665269__ul220117403576"><li id="EN-US_TOPIC_0288665269__li0201144025713">Note descriptions in <a href="sdrs_ug_pg_0002.html">Performing a Planned Failover</a></li><li id="EN-US_TOPIC_0288665269__li1520104016572">Note descriptions in <a href="sdrs_ug_rp_0002.html">Expanding Replication Pair Capacity</a></li></ul>
+<ul id="EN-US_TOPIC_0288665269__ul220117403576"><li id="EN-US_TOPIC_0288665269__li0201144025713">Note descriptions in <a href="sdrs_ug_pg_0002.html">Performing a Switchover</a></li><li id="EN-US_TOPIC_0288665269__li1520104016572">Note descriptions in <a href="sdrs_ug_rp_0002.html">Expanding Replication Pair Capacity</a></li></ul>
 </td>
 </tr>
 <tr id="EN-US_TOPIC_0288665269__row62521833163920"><td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0288665269__p17659183819394">2018-10-23</p>
@@ -107,7 +135,7 @@
 <td class="cellrowborder" valign="top" width="81%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0288665269__p18825534113819">Added the following content:</p>
 <ul id="EN-US_TOPIC_0288665269__ul48512031194111"><li id="EN-US_TOPIC_0288665269__li485112311411">A usage example in <a href="sdrs_pro_0003.html">Application Scenarios</a> </li><li id="EN-US_TOPIC_0288665269__li38511631194118">A note in <a href="en-us_topic_0110037558.html">Step 2: Create a Protected Instance</a></li><li id="EN-US_TOPIC_0288665269__li2085116312417">A note in <a href="sdrs_ug_pi_0005.html">Detaching a Replication Pair</a></li><li id="EN-US_TOPIC_0288665269__li158513312413">A note in <a href="sdrs_ug_rp_0002.html">Expanding Replication Pair Capacity</a></li></ul>
 <p id="EN-US_TOPIC_0288665269__p10659123815399">Modified the following content:</p>
-<ul id="EN-US_TOPIC_0288665269__ul865923833911"><li id="EN-US_TOPIC_0288665269__li176591538123912">A note in <a href="sdrs_ug_pg_0002.html">Performing a Planned Failover</a></li><li id="EN-US_TOPIC_0288665269__li15777337104012">A note in <a href="en-us_topic_0108560208.html">Performing a Failover</a></li></ul>
+<ul id="EN-US_TOPIC_0288665269__ul865923833911"><li id="EN-US_TOPIC_0288665269__li176591538123912">A note in <a href="sdrs_ug_pg_0002.html">Performing a Switchover</a></li><li id="EN-US_TOPIC_0288665269__li15777337104012">A note in <a href="en-us_topic_0108560208.html">Performing a Failover</a></li></ul>
 </td>
 </tr>
 <tr id="EN-US_TOPIC_0288665269__row7793145161916"><td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0288665269__p4715165581915">2018-09-29</p>
@@ -125,7 +153,7 @@
 <tr id="EN-US_TOPIC_0288665269__row1519183016519"><td class="cellrowborder" valign="top" width="19%" headers="mcps1.3.1.1.3.1.1 "><p id="EN-US_TOPIC_0288665269__p9193193015116">2018-09-11</p>
 </td>
 <td class="cellrowborder" valign="top" width="81%" headers="mcps1.3.1.1.3.1.2 "><p id="EN-US_TOPIC_0288665269__p12760140104112">Added the following content:</p>
-<ul id="EN-US_TOPIC_0288665269__ul1273616205543"><li id="EN-US_TOPIC_0288665269__li1872902045413">Figures in <a href="sdrs_ug_pg_0002.html">Performing a Planned Failover</a></li><li id="EN-US_TOPIC_0288665269__li27360204540">Screenshots in <a href="en-us_topic_0108180805.html">Step 1: Create a Protection Group</a>, <a href="en-us_topic_0110037558.html">Step 2: Create a Protected Instance</a>, <a href="en-us_topic_0110273585.html">Modifying Specifications of a Protected Instance</a>, <a href="sdrs_ug_pi_0002.html">Deleting a Protected Instance</a>, <a href="sdrs_ug_pi_0004.html">Attaching a Replication Pair</a>, and <a href="sdrs_ug_pi_0005.html">Detaching a Replication Pair</a></li></ul>
+<ul id="EN-US_TOPIC_0288665269__ul1273616205543"><li id="EN-US_TOPIC_0288665269__li1872902045413">The figure in <a href="sdrs_ug_pg_0002.html">Performing a Switchover</a></li><li id="EN-US_TOPIC_0288665269__li27360204540">Screenshots in <a href="en-us_topic_0108180805.html">Step 1: Create a Protection Group</a>, <a href="en-us_topic_0110037558.html">Step 2: Create a Protected Instance</a>, <a href="en-us_topic_0110273585.html">Modifying Specifications of a Protected Instance</a>, <a href="sdrs_ug_pi_0002.html">Deleting a Protected Instance</a>, <a href="sdrs_ug_pi_0004.html">Attaching a Replication Pair</a>, and <a href="sdrs_ug_pi_0005.html">Detaching a Replication Pair</a></li></ul>
 <ul id="EN-US_TOPIC_0288665269__ul11998532547"><li id="EN-US_TOPIC_0288665269__li1319985385419">A note in <a href="sdrs_ug_rp_0003.html">Deleting a Replication Pair</a></li><li id="EN-US_TOPIC_0288665269__li19245184512407">A note in <a href="en-us_topic_0108560208.html">Performing a Failover</a></li></ul>
 </td>
 </tr>
@@ -135,7 +163,7 @@
 <ul id="EN-US_TOPIC_0288665269__ul47062513482"><li id="EN-US_TOPIC_0288665269__li137061658481"><a href="sdrs_pro_0003.html">Application Scenarios</a></li><li id="EN-US_TOPIC_0288665269__li127060513483">A limitation in <a href="en-us_topic_0110037558.html">Step 2: Create a Protected Instance</a></li></ul>
 <p id="EN-US_TOPIC_0288665269__p1256644355216">Modified the following content:</p>
 <ul id="EN-US_TOPIC_0288665269__ul83818718534"><li id="EN-US_TOPIC_0288665269__li12382715318"><a href="sdrs_pro_0000.html">Service Overview</a></li></ul>
-<ul id="EN-US_TOPIC_0288665269__ul1816185914520"><li id="EN-US_TOPIC_0288665269__li31565910521"><a href="sdrs_ug_pg_0002.html">Performing a Planned Failover</a></li><li id="EN-US_TOPIC_0288665269__li658512400304"><a href="en-us_topic_0110037558.html">Step 2: Create a Protected Instance</a></li></ul>
+<ul id="EN-US_TOPIC_0288665269__ul1816185914520"><li id="EN-US_TOPIC_0288665269__li31565910521"><a href="sdrs_ug_pg_0002.html">Performing a Switchover</a></li><li id="EN-US_TOPIC_0288665269__li658512400304"><a href="en-us_topic_0110037558.html">Step 2: Create a Protected Instance</a></li></ul>
 <p id="EN-US_TOPIC_0288665269__p14460143123016">Deleted the following content:</p>
 <ul id="EN-US_TOPIC_0288665269__ul04751833306"><li id="EN-US_TOPIC_0288665269__li84757383014">Section "Adding a NIC"</li><li id="EN-US_TOPIC_0288665269__li12425115618307">Section "Deleting a NIC"</li></ul>
 </td>
@@ -156,3 +184,5 @@
 </div>
 </div>
 
+<div class="hrcopyright"><hr size="2"></div><div class="hwcopyright">Copyright &copy; Huawei Technologies Co., Ltd.</div></body>
+</html>
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