<html><body><p><font size="2">Above ~100 nodes the answer is "it depends" but memory is certainly the main factor.</font><br><br><font size="2">Important parts for the estimation are the number of nodes, filesystems, NSDs, NFS & SMB shares and the frequency (aka period) with which measurements are made.</font><br><font size="2">For a lot of sensors today the default is 1/sec which is quite high. Depending on your needs 1/ 10 sec might do or even 1/min.</font><br><br><font size="2">With just guessing on some numbers I end up with ~24-32 GB RAM needed in total and about the same number for disk space.</font><br><font size="2">If you want HA double the number, then divide by the number of collector nodes used in the federation setup.</font><br><font size="2">Place the collectors on nodes which do not play an additional important part in your cluster, then CPU should not be an issue.</font><br><br><font size="2" face="Arial">Mit freundlichen Grüßen / Kind regards</font><br><font size="2" face="Arial">Norbert Schuld</font><br><br><br><img width="16" height="16" src="cid:1__=8FBB0B17DFB9D4E38f9e8a93df938690918c8FB@" border="0" alt="Inactive hide details for Matt Weil ---21/08/2017 21:54:49---any input on this Thanks"><font size="2" color="#424282">Matt Weil ---21/08/2017 21:54:49---any input on this Thanks</font><br><br><font size="2" color="#5F5F5F">From: </font><font size="2">Matt Weil <mweil@wustl.edu></font><br><font size="2" color="#5F5F5F">To: </font><font size="2">gpfsug-discuss@spectrumscale.org</font><br><font size="2" color="#5F5F5F">Date: </font><font size="2">21/08/2017 21:54</font><br><font size="2" color="#5F5F5F">Subject: </font><font size="2">Re: [gpfsug-discuss] pmcollector node</font><br><font size="2" color="#5F5F5F">Sent by: </font><font size="2">gpfsug-discuss-bounces@spectrumscale.org</font><br><hr width="100%" size="2" align="left" noshade style="color:#8091A5; "><br><br><br><tt><font size="2">any input on this<br><br>Thanks<br><br><br>On 7/5/17 10:51 AM, Matt Weil wrote:<br>> Hello all,<br>><br>> Question on the requirements on pmcollector node/s for a 500+ node<br>> cluster. Is there a sizing guide? What specifics should we scale? <br>> CPU Disks memory?<br>><br>> Thanks<br>><br>> Matt<br>><br><br>_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br></font></tt><tt><font size="2"><a href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss">http://gpfsug.org/mailman/listinfo/gpfsug-discuss</a></font></tt><tt><font size="2"><br><br></font></tt><br><BR>
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