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    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[DOCS-15380] [Live Migration]Add IOPS considerations in Live Migration documentation</title>
                <link>https://jira.mongodb.org/browse/DOCS-15380</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;&lt;b&gt;Description&lt;/b&gt;&lt;/p&gt;

&lt;p&gt;During the push-based live migration of the client([Ignite sales|&lt;a href=&quot;https://mongodb.lightning.force.com/lightning/r/Account/001A000001B7WXAIA3/view&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://mongodb.lightning.force.com/lightning/r/Account/001A000001B7WXAIA3/view&lt;/a&gt;),] the Live migration(Push) method slowed down the application queries and started causing time outs in the application side.&lt;/p&gt;

&lt;p&gt;This was happening because the client was using gp2 EBS volume with 350GB storage and once the migration was started the read IOPS peaked from 500/sec to 2.5k/sec however after the burst window it came down to 500 IOPS again. Once that happened the entire production cluster slowed down and the disk latency and disk queue depth increased significantly.&#160;&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Changes&lt;/b&gt;&lt;/p&gt;

&lt;p&gt;The ask here is to include this IOPS consideration in the considerations section of the live migration(ref - &lt;a href=&quot;https://www.mongodb.com/docs/atlas/import/migrate-from-com-rs/#considerations)&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.mongodb.com/docs/atlas/import/migrate-from-com-rs/#considerations)&lt;/a&gt; as it is a pretty critical check while running the production migration and can cause significant downtime.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Screenshot -&lt;/b&gt;&lt;/p&gt;

&lt;p&gt;&#160;* &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;img src=&quot;https://lh6.googleusercontent.com/EaOALHA6XJp3w1fpHiGzpvKZG675eHFKTRYK-kKFSx2qynd3u56O7oGkjxjPOCMP9zS6du5mVwkHvOrTjvS7NwjnmFpG_4kd_Q_eG3GgMkKdyq06hnBaboWRvXttjdeZMtS8HpBcLSOcGEHywQ&quot; height=&quot;288&quot; width=&quot;604&quot; style=&quot;border: 0px solid black&quot; /&gt;&lt;/span&gt;*&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2058946">DOCS-15380</key>
            <summary>[Live Migration]Add IOPS considerations in Live Migration documentation</summary>
                <type id="12510" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Feedback</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="12300">Won&apos;t Do</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="aditya.srivastava@mongodb.com">Aditya Srivastava</reporter>
                        <labels>
                    </labels>
                <created>Tue, 31 May 2022 18:44:44 +0000</created>
                <updated>Wed, 1 Jun 2022 15:31:12 +0000</updated>
                            <resolved>Wed, 1 Jun 2022 12:08:11 +0000</resolved>
                                                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4586203" author="JIRAUSER1260385" created="Wed, 1 Jun 2022 12:07:55 +0000"  >&lt;p&gt;incorrectly opened this instead of DOCSP ticket, withdrawing and opening a new one.&lt;/p&gt;</comment>
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