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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-6329] Recommended NTFS cluster size</title>
                <link>https://jira.mongodb.org/browse/DOCS-6329</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;It would be nice to have recommendations on &lt;a href=&quot;https://support.microsoft.com/en-us/kb/140365&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Windows NTFS cluster sizes&lt;/a&gt;, given we have some things to say about the &lt;a href=&quot;http://docs.mongodb.org/manual/administration/production-checklist/#linux&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;configuration of Linux file systems&lt;/a&gt;. Windows tends to be more plug &amp;amp; play but cluster size will certainly have a small impact.&lt;/p&gt;

&lt;p&gt;It is likely we just recommend 4K as a blanket statement, which would suit MMAPv1, but there might be more range in WiredTiger. Not sure what would be best there.&lt;/p&gt;</description>
                <environment></environment>
        <key id="233211">DOCS-6329</key>
            <summary>Recommended NTFS cluster size</summary>
                <type id="5" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14716&amp;avatarType=issuetype">Sub-task</type>
                            <parent id="490284">DOCS-11434</parent>
                                    <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="9">Done</resolution>
                                        <assignee username="tony.sansone@mongodb.com">Anthony Sansone</assignee>
                                    <reporter username="andrew.ryder@mongodb.com">Andrew Ryder</reporter>
                        <labels>
                    </labels>
                <created>Tue, 6 Oct 2015 21:26:25 +0000</created>
                <updated>Sat, 16 Jun 2018 04:47:31 +0000</updated>
                            <resolved>Fri, 15 Jun 2018 01:15:55 +0000</resolved>
                                                                        <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1922432" author="xgen-internal-githook" created="Fri, 15 Jun 2018 21:40:02 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;atsansone&apos;, &apos;name&apos;: &apos;Anthony Sansone&apos;, &apos;email&apos;: &apos;tony.sansone@mongodb.com&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-6329&quot; title=&quot;Recommended NTFS cluster size&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-6329&quot;&gt;&lt;del&gt;DOCS-6329&lt;/del&gt;&lt;/a&gt;): Updated default NTFS allocation unit size.&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/176307dd4129bf907b61b2ad2aa633ca66b34f35&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/176307dd4129bf907b61b2ad2aa633ca66b34f35&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1922428" author="xgen-internal-githook" created="Fri, 15 Jun 2018 21:36:40 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;atsansone&apos;, &apos;name&apos;: &apos;Anthony Sansone&apos;, &apos;email&apos;: &apos;tony.sansone@mongodb.com&apos;}
&lt;p&gt;Message: (&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-6329&quot; title=&quot;Recommended NTFS cluster size&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-6329&quot;&gt;&lt;del&gt;DOCS-6329&lt;/del&gt;&lt;/a&gt;): Updated default NTFS allocation unit size.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/b472c0a76504bfbdd0b2de8fbb4c8b493b0b375e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/b472c0a76504bfbdd0b2de8fbb4c8b493b0b375e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1595161" author="tom.li" created="Tue, 13 Jun 2017 04:20:48 +0000"  >&lt;p&gt;I am just wondering if we are still planning to improve the doc &lt;a href=&quot;https://docs.mongodb.com/manual/administration/production-checklist-operations/#windows&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Operations Checklist for Windows&lt;/a&gt; to have recommendations on Windows NTFS cluster size. I have a customer who is asking the same thing and it would be nice to be able to refer the customer to our official docs for this recommendation.&lt;/p&gt;</comment>
                            <comment id="1054915" author="michael.cahill" created="Thu, 8 Oct 2015 04:22:17 +0000"  >&lt;p&gt;I think 4KB makes sense for WiredTiger as well &amp;#8211; we will write data in multiples of 4KB, so a smaller size doesn&apos;t make sense, and I assume there is overhead if we write 4KB blocks and the cluster size is larger.&lt;/p&gt;</comment>
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