
<html><body><p><font size="2">Dear Spectrum Scale User Group,</font><br><br><font size="2">can somebody please share with me answers to the following setup / architectural questions:</font><br><br><font size="2">- What size is typically required for a descOnly NSD, that will only hold a copy of a filesystem descriptor area?</font><br><br><font size="2">- Having a 2-node "core-cluster" and a quorum node at a third site with locally attached descOnly NSDs to that q-node. </font><br><font size="2">What are the network latency / bandwidth requirements for traffic flowing between core-cluster-nodes and the q-node?</font><br><font size="2">(from my understanding the traffic contains primarily mmfsd communication - including FS descOnly updates - but no data/metadata I/O)</font><br><br><font size="2">Thank you in advance for answers - have a nice weekend.</font><br><br><font size="2" face="Arial">Mit freundlichen Grüßen / Sincerely</font><br><br><b><font face="Arial">Christoph Krafft</font></b><br><br><font size="1" color="#0055AA" face="Arial">Client Technical Specialist - Power Systems, IBM Systems</font><br><font size="1" color="#0055AA" face="Arial">Certified IT Specialist @ The Open Group </font><table border="0" cellspacing="0" cellpadding="0"><tr valign="top"><td class="small_font" width="800" colspan="4" valign="middle"><hr width="100%" size="2" align="left" style="color:#696969; "></td></tr>

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<tr valign="top"><td class="inner" width="91" valign="middle"><font size="1" color="#0055AA" face="Arial">Phone:</font></td><td class="inner" width="331" valign="middle"><font size="1" color="#0055AA" face="Arial">+49 (0) 7034 643 2171</font></td><td class="inner" width="234" valign="middle"><font size="1" color="#0055AA" face="Arial"> IBM Deutschland GmbH</font></td><td width="144" rowspan="4" valign="middle"><div align="right"><img src="cid:2__=8FBB0FB9DFC207518f9e8a93df938690918c8FB@" width="87" height="30" align="bottom"></div></td></tr>

<tr valign="top"><td class="inner" width="91" valign="middle"><font size="1" color="#0055AA" face="Arial">Mobile:</font></td><td class="inner" width="331" valign="middle"><font size="1" color="#0055AA" face="Arial">+49 (0) 160 97 81 86 12</font></td><td class="inner" width="234" valign="middle"><font size="1" color="#0055AA" face="Arial"> Am Weiher 24</font></td></tr>

<tr valign="top"><td class="inner" width="91" valign="middle"><font size="1" color="#0055AA" face="Arial">Email:</font></td><td class="inner" width="331" valign="middle"><font size="1" color="#0055AA" face="Arial">ckrafft@de.ibm.com</font></td><td class="inner" width="234" valign="middle"><font size="1" color="#0055AA" face="Arial"> 65451 Kelsterbach</font></td></tr>

<tr valign="top"><td class="inner" width="91" valign="middle"><img width="1" height="1" src="cid:1__=8FBB0FB9DFC207518f9e8a93df938690918c8FB@" border="0" alt=""></td><td class="inner" width="331" valign="middle"><img width="1" height="1" src="cid:1__=8FBB0FB9DFC207518f9e8a93df938690918c8FB@" border="0" alt=""></td><td class="inner" width="234" valign="middle"><font size="1" color="#0055AA" face="Arial"> Germany</font></td></tr>

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<tr valign="top"><td class="foot" width="800" colspan="4" valign="middle"><a href="https://www.ibm.com/privacy/us/en/"><u><font size="1" color="#0000FF" face="Arial">IBM Data Privacy Statement</font></u></a><font size="1" color="#999999" face="Arial"> </font></td></tr>

<tr valign="top"><td class="foot" width="800" colspan="4" valign="middle"><font size="1" color="#999999" face="Arial">IBM Deutschland GmbH / Vorsitzender des Aufsichtsrats: Martin Jetter<br>Geschäftsführung: Gregor Pillen (Vorsitzender), Agnes Heftberger, Norbert Janzen, Markus Koerner, Christian Noll, Nicole Reimer<br>Sitz der Gesellschaft: Ehningen / Registergericht: Amtsgericht Stuttgart, HRB 14562 / WEEE-Reg.-Nr. DE 99369940 </font></td></tr></table><font size="2"><br></font><BR>

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