<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">
Hi Anderson,
<div class=""><br class="">
</div>
<div class="">Thanks for the response … however, the scenario you describe below wouldn’t impact us. We have 8 NSD servers and they can easily provide the needed performance to native GPFS clients. We could also take a downtime if we ever did need to expand
in the manner described below.</div>
<div class=""><br class="">
</div>
<div class="">In fact, one of the things that’s kinda surprising to me is that upgrading the SMB portion of CES requires a downtime. Let’s just say that I know for a fact that sernet-samba can be done rolling / live.</div>
<div class=""><br class="">
</div>
<div class="">Kevin<br class="">
<div><br class="">
<blockquote type="cite" class="">
<div class="">On May 4, 2018, at 10:52 AM, Anderson Ferreira Nobre <<a href="mailto:anobre@br.ibm.com" class="">anobre@br.ibm.com</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt">
<div dir="ltr" class="">Hi Kevin,</div>
<div dir="ltr" class=""> </div>
<div dir="ltr" class="">I think one of the reasons is if you need to add or remove nodes from cluster you will start to face the constrains of this kind of solution. Let's say you have a cluster with two nodes and share the same set of LUNs through SAN. And
for some reason you need to add more two nodes that are NSD Servers and Protocol nodes. For the new nodes become NSD Servers, you will have to redistribute the NSD disks among four nodes. But for you do that you will have to umount the filesystems. And for
you umount the filesystems you would need to stop protocol services. At the end you will realize that a simple task like that is disrruptive. You won't be able to do online.</div>
<div dir="ltr" class=""> </div>
<div dir="ltr" class="">
<div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10.5pt">
<div dir="ltr" class="">
<div class=""> </div>
<table cellpadding="0" cellspacing="0" style="border:0;table-layout:auto;white-space:normal;color:#5f5f5f;width:650px;font-size:7.2pt" width="650px" class="">
<tbody class="">
<tr class="">
<td style="vertical-align: bottom;" class="">
<div style="font-size:9pt" class=""><span style="font-size:1.000em;" class="">Abraços / Regards / Saludos,</span></div>
<div class=""> <br class="webkit-block-placeholder">
</div>
<div class="vcard" style="margin:0 0 8px 0"><span style="font-size:1.000em;" class=""><b class="n fn" style="color:#888888;font-size:12pt"><span class="given-name">Anderson</span>
<span class="family-name">Nobre</span></b><br class="">
AIX & Power Consultant<br class="">
Master Certified IT Specialist<br class="">
IBM Systems Hardware Client Technical Team – IBM Systems Lab Services<br class="">
<br class="">
<img alt="community_general_lab_services" class="org" height="120" src="http://esign.webmaster.ibm.com/img/signature_lab_services.jpg" width="333"></span></div>
</td>
<td class=""> </td>
</tr>
</tbody>
</table>
<table cellpadding="0" cellspacing="0" style="border:0;table-layout:auto;white-space:normal;color:#5f5f5f;width:650px;font-size:7.2pt" width="650px" class="">
<tbody class="">
<tr class="">
<td colspan="3" class="">
<hr style="border:0;color:#696969;background-color:#696969;height:1px;" class="">
</td>
</tr>
<tr class="">
<td style="vertical-align: top;font-family:arial,helvetica,sans-serif" width="400px" class="">
<span style="font-size:1.000em;" class=""><span class="tel"><span style="color:#466BB0;font-weight:bold" class=""><abbr class="type" title="work">Phone:</abbr></span>
<span class="value">55-19-2132-4317</span></span><br class="">
<span style="color:#466BB0;font-weight:bold;font-style:7.2pt" class="">E-mail:</span>
<a class="email" href="mailto:anobre@br.ibm.com" target="_blank"><span class="value" style="color:#5f5f5f">anobre@br.ibm.com</span></a></span></td>
<td align="right" style="vertical-align: top;font-family:arial,helvetica,sans-serif" width="150px" class="">
<span style="font-size:1.000em;" class=""><img alt="IBM" class="org" src="http://esign.webmaster.ibm.com/img/ibm3.gif"></span></td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div dir="ltr" class=""> </div>
<div dir="ltr" class=""> </div>
<blockquote data-history-content-modified="1" dir="ltr" style="border-left:solid #aaaaaa 2px; margin-left:5px; padding-left:5px; direction:ltr; margin-right:0px" class="">
----- Original message -----<br class="">
From: "Buterbaugh, Kevin L" <<a href="mailto:Kevin.Buterbaugh@Vanderbilt.Edu" class="">Kevin.Buterbaugh@Vanderbilt.Edu</a>><br class="">
Sent by: <a href="mailto:gpfsug-discuss-bounces@spectrumscale.org" class="">gpfsug-discuss-bounces@spectrumscale.org</a><br class="">
To: gpfsug main discussion list <<a href="mailto:gpfsug-discuss@spectrumscale.org" class="">gpfsug-discuss@spectrumscale.org</a>><br class="">
Cc:<br class="">
Subject: [gpfsug-discuss] Not recommended, but why not?<br class="">
Date: Fri, May 4, 2018 12:39 PM<br class="">
<br class="">
<!--Notes ACF
<meta http-equiv="Content-Type" content="text/html; charset=utf8" >-->Hi All,
<div class=""> </div>
<div class="">In doing some research, I have come across numerous places (IBM docs, DeveloperWorks posts, etc.) where it is stated that it is not recommended to run CES on NSD servers … but I’ve not found any detailed explanation of why not.</div>
<div class=""> </div>
<div class="">I understand that CES, especially if you enable SMB, can be a resource hog. But if I size the servers appropriately … say, late model boxes with 2 x 8 core CPU’s, 256 GB RAM, 10 GbE networking … is there any reason why I still should not combine
the two?</div>
<div class=""> </div>
<div class="">To answer the question of why I would want to … simple, server licenses.</div>
<div class=""> </div>
<div class="">Thanks…</div>
<div class=""> </div>
<div class="">Kevin</div>
<div class="">
<div class="">—</div>
<div class="">Kevin Buterbaugh - Senior System Administrator</div>
<div class="">Vanderbilt University - Advanced Computing Center for Research and Education</div>
<div class=""><a href="mailto:Kevin.Buterbaugh@vanderbilt.edu" target="_blank" class="">Kevin.Buterbaugh@vanderbilt.edu</a> - (615)875-9633</div>
<div class=""> </div>
</div>
<div class=""><font face="Default Monospace,Courier New,Courier,monospace" size="2" class="">_______________________________________________<br class="">
gpfsug-discuss mailing list<br class="">
gpfsug-discuss at <a href="http://spectrumscale.org" class="">spectrumscale.org</a><br class="">
<a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgpfsug.org%2Fmailman%2Flistinfo%2Fgpfsug-discuss&data=02%7C01%7CKevin.Buterbaugh%40vanderbilt.edu%7C2b0fc12c4dc24aa1f7fb08d5b1d70c9e%7Cba5a7f39e3be4ab3b45067fa80faecad%7C0%7C1%7C636610459542553835&sdata=8aArQLzU5q%2BySqHcoQ3SI420XzP08ICph7F18G7C4pw%3D&reserved=0" target="_blank" class="">http://gpfsug.org/mailman/listinfo/gpfsug-discuss</a></font></div>
</blockquote>
<div dir="ltr" class=""> </div>
</div>
<br class="">
_______________________________________________<br class="">
gpfsug-discuss mailing list<br class="">
gpfsug-discuss at <a href="http://spectrumscale.org" class="">spectrumscale.org</a><br class="">
<a href="https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgpfsug.org%2Fmailman%2Flistinfo%2Fgpfsug-discuss&data=02%7C01%7CKevin.Buterbaugh%40vanderbilt.edu%7C2b0fc12c4dc24aa1f7fb08d5b1d70c9e%7Cba5a7f39e3be4ab3b45067fa80faecad%7C0%7C1%7C636610459542553835&sdata=8aArQLzU5q%2BySqHcoQ3SI420XzP08ICph7F18G7C4pw%3D&reserved=0" class="">https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgpfsug.org%2Fmailman%2Flistinfo%2Fgpfsug-discuss&data=02%7C01%7CKevin.Buterbaugh%40vanderbilt.edu%7C2b0fc12c4dc24aa1f7fb08d5b1d70c9e%7Cba5a7f39e3be4ab3b45067fa80faecad%7C0%7C1%7C636610459542553835&sdata=8aArQLzU5q%2BySqHcoQ3SI420XzP08ICph7F18G7C4pw%3D&reserved=0</a><br class="">
</div>
</blockquote>
</div>
<br class="">
</div>
</body>
</html>