https://alteeve.com/w/index.php?action=history&feed=atom&title=Grid_quorumGrid quorum - Revision history2026-06-14T18:30:45ZRevision history for this page on the wikiMediaWiki 1.42.3https://alteeve.com/w/index.php?title=Grid_quorum&diff=5559&oldid=prevDigimer: Created page with "{{header}} A ''Grid Quorum'' system is one where the nodes (<span class="code">n</span>) in the cluster are arranged in an <span class="code">k^2</span> arrangement. Quorum i..."2013-12-07T23:36:16Z<p>Created page with "{{header}} A ''Grid Quorum'' system is one where the nodes (<span class="code">n</span>) in the cluster are arranged in an <span class="code">k^2</span> arrangement. Quorum i..."</p>
<p><b>Páàjì titun</b></p><div>{{header}}<br />
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A ''Grid Quorum'' system is one where the nodes (<span class="code">n</span>) in the cluster are arranged in an <span class="code">k^2</span> arrangement. Quorum is determined by having all nodes in one horizontal row plus at least one node from each row below it.<br />
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Here is an example of a 25-node cluster in a 5 x 5 grid;<br />
<br />
{|class="wikitable"<br />
|-<br />
|<span class="code">01</span><br />
|<span class="code">02</span><br />
|<span class="code">03</span><br />
|<span class="code">04</span><br />
|<span class="code">05</span><br />
|-<br />
|<span class="code">06</span><br />
|<span class="code">07</span><br />
|<span class="code">08</span><br />
|<span class="code">09</span><br />
|<span class="code">10</span><br />
|-<br />
|<span class="code">11</span><br />
|<span class="code">12</span><br />
|<span class="code">13</span><br />
|<span class="code">14</span><br />
|<span class="code">15</span><br />
|-<br />
|<span class="code">16</span><br />
|<span class="code">17</span><br />
|<span class="code">18</span><br />
|<span class="code">19</span><br />
|<span class="code">20</span><br />
|-<br />
|<span class="code">21</span><br />
|<span class="code">22</span><br />
|<span class="code">23</span><br />
|<span class="code">24</span><br />
|<span class="code">25</span><br />
|}<br />
<br />
An example of this grid having quorum would be votes from;<br />
<br />
{|class="wikitable"<br />
|-<br />
|<span class="code">01</span><br />
|<span class="code">02</span><br />
|<span class="code">03</span><br />
|<span class="code">04</span><br />
|<span class="code">05</span><br />
|-<br />
!<span class="code">06</span><br />
!<span class="code">07</span><br />
!<span class="code">08</span><br />
!<span class="code">09</span><br />
!<span class="code">10</span><br />
|-<br />
|<span class="code">11</span><br />
!<span class="code">12</span><br />
|<span class="code">13</span><br />
|<span class="code">14</span><br />
|<span class="code">15</span><br />
|-<br />
|<span class="code">16</span><br />
|<span class="code">17</span><br />
|<span class="code">18</span><br />
!<span class="code">19</span><br />
|<span class="code">20</span><br />
|-<br />
!<span class="code">21</span><br />
|<span class="code">22</span><br />
|<span class="code">23</span><br />
|<span class="code">24</span><br />
|<span class="code">25</span><br />
|}<br />
<br />
To learn more, please see:<br />
<br />
* [http://www.dcg.ethz.ch/lectures/ss03/distcomp/lecture/chapter7.pdf Principles of Distributed Computing] (pdf) by [http://www.zurich.ibm.com/~cca/ Christian Cachin].<br />
* [http://lpd.epfl.ch/sgilbert/presentations/OPODIS04.ppt The Quorum Deployment Problem] (ppt) by Seth Gilbert and Grzegorz Malewicz.<br />
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{{footer}}</div>Digimer