https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LUDOC-412 Lustre Documentation <p>Hello~ Recently, I have question about the MAX osts size..</p> <p>According to lustre manual.</p> <p>Page 4, Max OSTs Size 256TB (zfs) ==&gt; 232.831TiB</p> <p>Page 32 , Max OSTs Size 256TiB (zfs) ==&gt; 281.475TB</p> <p>Would you please guide which is correct? Can I use 256TiB? or use 256TB?</p> <p>Thanks..</p> <p> </p> IML4070 LUDOC-412

About Max OSTs Size. 256TB vs 256TiB

Bug Minor Resolved Fixed Joseph Gmitter WanHee, Kim Tue, 21 Aug 2018 06:23:24 +0000 Thu, 30 Aug 2018 06:46:31 +0000 Thu, 30 Aug 2018 06:46:31 +0000 0 5 <p>Additional questions.<br/> If Lustre is ldiskfs, Is it 128TB per OST?  Is 128 TiB correct?</p> <p>It is binary size limits, so TiB. </p> <p>Thanks. That means Binary. then actual limit is below  right?</p> <p>128TiB = 140.737TB , Max Ldiskfs size limit</p> <p>256TiB = 281.475TB , Max ZFS size limit</p> <p> </p> <p>Moved the ticket to an LUDOC for correcting the manual.</p> <p>Joseph Gmitter (jgmitter@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/33075" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33075</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LUDOC-412" title="About Max OSTs Size. 256TB vs 256TiB" class="issue-link" data-issue-key="LUDOC-412"><del>LUDOC-412</del></a> misc: Update byte prefixes to use IEC<br/> Project: doc/manual<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 76f3092a1f503be523c409edca6c9d51d7381c32</p> <p>There is not really an upper size limit for ZFS, but this is the recommended maximum for management and performance reasons. The ZFS filesystems could be larger if there is not a need for high performance, just capacity, but we have never tested such large filesystems ourselves, nor do we know of any sites using larger ZFS filesystems. </p> <p>Andreas Dilger (adilger@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/33075/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33075/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LUDOC-412" title="About Max OSTs Size. 256TB vs 256TiB" class="issue-link" data-issue-key="LUDOC-412"><del>LUDOC-412</del></a> misc: Update byte prefixes to use IEC<br/> Project: doc/manual<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 1f935d0231c9f14bbe5e07c87a31bcacd0492ae6</p> Development Rank 1|i0011z: Rank (Obsolete) 9223372036854775807 Severity