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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[DOCS-13443] Provide guidance for sizing journal folder</title>
                <link>https://jira.mongodb.org/browse/DOCS-13443</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;
&lt;p&gt;We recommend moving the journal to a separate mount for performance reasons and as part of our best practices but omit providing guidance on sizing of this mount.&#160; &#160;The consequence of this is the generation of unnecessary&#160; Support cases and inconsistent responses.&lt;/p&gt;

&lt;p&gt;Under steady-state conditions we need to keep at least &quot;dirty data generated and journaled between checkpoints&quot;.&#160;&lt;/p&gt;

&lt;p&gt;Starting in 4.0 we journal only OpLog entries.&#160; Therefore, using OpLog churn metrics as a proxy we can provide some actual guidance.&lt;/p&gt;

&lt;p&gt;Under steady-state I&apos;d use 10 min * oplog churn/min.&#160; I would then recommend the customer think about downtime requirements where a majority commit point is not moved forward for some extended period of time (due to maintenance or downtime).&#160; In that case, we should plan for hours to days of &quot;window&quot; and size accordingly.&lt;/p&gt;

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        <key id="1179927">DOCS-13443</key>
            <summary>Provide guidance for sizing journal folder</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="shakir.sadikali@mongodb.com">Shakir Sadikali</reporter>
                        <labels>
                            <label>docs-administration</label>
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                <created>Sun, 23 Feb 2020 22:08:21 +0000</created>
                <updated>Mon, 30 Oct 2023 20:26:47 +0000</updated>
                                                            <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4940398" author="edu.bot" created="Mon, 31 Oct 2022 16:04:37 +0000"  >&lt;p&gt;Hello! This ticket has been closed due to inactivity. If you believe this ticket is still important, please reopen it and leave a comment to explain why. Thank you!&lt;/p&gt;</comment>
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