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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Yes you can – this is actually the same case as SAN attached storage (eg the usual twin tailed).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">You simply reinstall Linux on that node and add it back to the cluster (mmsdrrestore).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">The NSD drives are unaffected in the same way that they would have been if they were in a separate 2U SAN shelf<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Daniel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="line-height:12.0pt"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Daniel Kidger<br>
</span></b><span style="color:black">HPC Storage Solutions Architect, EMEA</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#040400"><a href="mailto:daniel.kidger@hpe.com"><span style="color:#040400">daniel.kidger@hpe.com</span></a><br>
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</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">+44 (0)7818 522266 <br>
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</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#040400"><a href="http://www.hpe.com/"><b><span style="color:black;text-decoration:none">hpe.com</span></b></a><br>
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</span><img border="0" width="191" height="96" style="width:1.9861in;height:1.0in" id="Picture_x0020_1" src="cid:image001.png@01D8A270.738088F0"><o:p></o:p></p>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> gpfsug-discuss <gpfsug-discuss-bounces@gpfsug.org>
<b>On Behalf Of </b>shao feng<br>
<b>Sent:</b> 28 July 2022 08:03<br>
<b>To:</b> gpfsug main discussion list <gpfsug-discuss@gpfsug.org><br>
<b>Subject:</b> [gpfsug-discuss] add local nsd back to cluster?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi all,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I am planning to implement a cluster with a bunch of old x86 machines, the disks are not connected to nodes via the SAN network, instead each x86 machine has some local attached disks.<o:p></o:p></p>
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<p class="MsoNormal">The question is regarding node failure, for example only the operating system disk fails and the nsd disks are good. In that case I plan to replace the failing OS disk with a new one and install the OS on it and re-attach these nsd disks
to that node, my question is: will this work? how can I add a nsd back to the cluster without restoring data from other replicas since the data/metadata is actually not corrupted on nsd.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Best regards,<o:p></o:p></p>
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