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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">When you create the file-system, you create NSD devices (on physical disks – usually LUNs), and then assign these devices as disks to a file-system. This sounds straight forwards.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Note GPFS isn’t really intedned for JBODs unless you have GNR code.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Simon<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black"><gpfsug-discuss-bounces@spectrumscale.org> on behalf of Aaron Turner <A.Turner@lboro.ac.uk><br>
<b>Reply-To: </b>"gpfsug-discuss@spectrumscale.org" <gpfsug-discuss@spectrumscale.org><br>
<b>Date: </b>Tuesday, 14 May 2019 at 09:47<br>
<b>To: </b>"gpfsug-discuss@spectrumscale.org" <gpfsug-discuss@spectrumscale.org><br>
<b>Subject: </b>[gpfsug-discuss] Identifiable groups of disks?<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"><span style="font-size:12.0pt;color:black">Scenario:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<span style="color:black">one set of JBODS</span><o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<span style="color:black">want to create two GPFS file systems</span><o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<span style="color:black">want to ensure that file system A uses physical disks a0, a1... an-1 and file system B uses physical disks b0, b1... bn-1</span><o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<span style="color:black">want to be able to assign specific sets of disks a0..an-1, b0..bn-1 on creation</span><o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<span style="color:black">Potentially allows all disks b0..bn-1 to be destroyed if required whilst not affecting a0..an-1</span><o:p></o:p></li></ul>
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<p class="MsoNormal"><span style="color:black">Is this possible in GPFS?</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="color:black">Regards</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black">______________________________________
<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><em><span style="font-size:10.0pt;font-family:"Palatino Linotype";color:black">Aaron Turner</span></em><span style="font-size:12.0pt;color:black">
<o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><em><span style="font-size:10.0pt;font-family:"Palatino Linotype";color:black">Senior IT Services Specialist in High Performance Computing</span></em><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><em><span style="font-size:10.0pt;font-family:"Palatino Linotype";color:black">Loughborough University</span></em><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><em><span style="font-size:10.0pt;font-family:"Palatino Linotype";color:black">a.turner@lboro.ac.uk</span></em><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><em><span style="font-size:10.0pt;font-family:"Palatino Linotype";color:black">01509 226185</span></em><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black;background:white">______________________________________</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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