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<p class="MsoNormal">Dear spectrum scale users!<o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">May I ask you a design question?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We have an IB environment which is very mixed at the moment ( connecX3 … connect-X6 with FDR , even FDR10 and with arrive of ESS5000SC7 now also HDR100 and HDR switches. We still have some big troubles in this fabric
when using RDMA , a case at Mellanox and IBM is open . <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The environment has 3 old Building blocks 2xESSGL6 and 1x GL4 , from where we want to migrate the data to ess5000 , ( mmdelvdisk +qos)
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Due to the current problems with RDMA we though eventually we could try a workaround :<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">If you are interested there is Maybe you can find the attachment ?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We build 2 separate fabrics , the ess-IO servers attached to both blue and green and all other cluster members and all remote clusters only to fabric blue
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The daemon interfaces (IPoIP) are on fabric blue<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It is the aim to setup rdma only on the ess-ioServers in the fabric green , in the blue we must use IPoIB (tcp)
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Do you think datamigration would work between ess01,ess02,… to ess07,ess08 via RDMA ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Or is it principally not possible to make a rdma network only for a subset of a cluster (though this subset would be reachable via other fabric) ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thank you very much for any input !<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards walter <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-AT">Mit freundlichen Grüßen<br>
<b><i>Walter Sklenka</i></b><br>
</span><b><i><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:gray;mso-fareast-language:DE-AT">Technical Consultant</span></i></b><span style="color:black;mso-fareast-language:DE-AT">
</span><span style="color:#212121;mso-fareast-language:DE-AT"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:DE-AT"> </span><span style="color:#212121;mso-fareast-language:DE-AT"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-AT">EDV-Design Informationstechnologie GmbH<br>
Giefinggasse 6/1/2, A-1210 Wien<br>
Tel: +43 1 29 22 165-31<br>
Fax: +43 1 29 22 165-90<br>
E-Mail: <a href="mailto:sklenka@edv-design.at" target="_blank"><span style="color:#0563C1">sklenka@edv-design.at</span></a></span><span style="font-size:8.0pt;color:black;mso-fareast-language:DE-AT"><br>
</span><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:DE-AT">Internet:
<a href="http://www.edv-design.at/" target="_blank"><span style="color:#0563C1">www.edv-design.at</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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