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<p class="MsoNormal"><span style="font-size:11.0pt">Looking for feedback/strategies in setting up several GPFS servers with local SAS. They would all be part of the same file system. The systems are all similar in configuration - 70 4TB drives.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Options I’m considering:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">- Create RAID arrays of the disks on each server (worried about the RAID rebuild time when a drive fails with 4, 6, 8TB drives)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">- No RAID with 2 replicas, single drive per NSD. When a drive fails, recreate the NSD – but then I need to fix up the data replication via restripe<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">- FPO – with multiple failure groups - letting the system manage replica placement and then have GPFS due the restripe on disk failure automatically<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Comments or other ideas welcome.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal">Bob Oesterlin<br>
Sr Principal Storage Engineer, Nuance<br>
507-269-0413<o:p></o:p></p>
<p class="MsoNormal"><span style="font-family:"Times New Roman""><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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