<font size=2 face="sans-serif">John, </font><br><br><font size=2 face="sans-serif">yes, they definitely can!</font><br><font size=2 face="sans-serif">Nodes in a remote cluster are tob viewed
just as local nodes in terms of taking part in the mechanisms of access
to data.</font><br><font size=2 face="sans-serif">Token management will be done just as
with local nodes. </font><br><br><font size=2 face="sans-serif">So if one node in cluster A recognizes
a communication issue with a node in cluster B, it will let the clustermgr
know, </font><br><font size=2 face="sans-serif">and that one then decides on whether
to expel one or the other.</font><br><br><font size=2 face="sans-serif">Having a remote cluster connected relies
on a stable and low latency network, just as a local cluster does.</font><br><font size=2 face="sans-serif">if your network is not reliable, you
woudl go for AFM or other replication mechanisms (as the thread title implies;)
) </font><br><br><font size=1 face="Arial"><br>Mit freundlichen Grüßen / Kind regards</font><p><font size=2 face="Arial"><b>Achim Rehor</b></font><p><table width=600 style="border-collapse:collapse;"><tr height=8><td width=600 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><div align=center><hr noshade></div><tr height=8><td width=600 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 face="Arial"> </font><tr height=8><td width=496 colspan=3 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 face="Arial">Software
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Deutschland</font><tr height=8><td width=44 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial">E-Mail:</font><td width=197 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial">Achim.Rehor@de.ibm.com</font><td width=255 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> Am
Weiher 24</font><tr height=8><td width=44 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> </font><td width=197 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> </font><td width=255 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> 65451
Kelsterbach</font><tr height=8><td width=44 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> </font><td width=197 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> </font><td width=255 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> Germany</font><tr height=8><td width=44 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> </font><td width=197 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> </font><td width=255 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#0060a0 face="Arial"> </font><tr height=8><td width=600 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><div align=center><hr noshade></div><tr height=8><td width=600 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 face="Arial"> </font><tr height=8><td width=600 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#a2a2a2 face="Arial">IBM
Deutschland GmbH / Vorsitzender des Aufsichtsrats: Martin Jetter <br>Geschäftsführung: Martin Hartmann (Vorsitzender), Norbert Janzen, Stefan
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HRB 14562 WEEE-Reg.-Nr. DE 99369940 </font></table><br><p><font size=3> </font><br><br><br><br><font size=1 color=#5f5f5f face="sans-serif">From:
</font><font size=1 face="sans-serif">John Hearns <john.hearns@asml.com></font><br><font size=1 color=#5f5f5f face="sans-serif">To:
</font><font size=1 face="sans-serif">gpfsug main discussion
list <gpfsug-discuss@spectrumscale.org></font><br><font size=1 color=#5f5f5f face="sans-serif">Date:
</font><font size=1 face="sans-serif">25/01/2018 10:53</font><br><font size=1 color=#5f5f5f face="sans-serif">Subject:
</font><font size=1 face="sans-serif">Re: [gpfsug-discuss]
storage-based replication for Spectrum Scale</font><br><font size=1 color=#5f5f5f face="sans-serif">Sent by:
</font><font size=1 face="sans-serif">gpfsug-discuss-bounces@spectrumscale.org</font><br><hr noshade><br><br><br><font size=2 face="Calibri">Jan Frode, thankyou for that link.</font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri">I have a general question regarding remote
GPFS filesystems.</font><br><font size=2 face="Calibri">If we have two clusters, in separate locations
on separate Infiniband fabrics,</font><br><font size=2 face="Calibri">we can set up a remote relationship between
filesystems.</font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri">As Valdis discusses, what happens if the
IP link between the clusters goes down or is unstable?</font><br><font size=2 face="Calibri">Can nodes in one cluster vote out nodes
in the other cluster?</font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri"><b>From:</b> gpfsug-discuss-bounces@spectrumscale.org
[</font><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org"><font size=2 face="Calibri">mailto:gpfsug-discuss-bounces@spectrumscale.org</font></a><font size=2 face="Calibri">]
<b>On Behalf Of </b>Jan-Frode Myklebust<b><br>Sent:</b> Wednesday, January 24, 2018 8:08 AM<b><br>To:</b> gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><b><br>Subject:</b> Re: [gpfsug-discuss] storage-based replication for Spectrum
Scale</font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri">Have you seen </font><a href="https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ibm.com%2Fsupport%2Fknowledgecenter%2Fen%2FSTXKQY_4.2.0%2Fcom.ibm.spectrum.scale.v4r2.adv.doc%2Fbl1adv_dr.htm&data=01%7C01%7Cjohn.hearns%40asml.com%7C1e23d7bb660147eab5c908d562f93422%7Caf73baa8f5944eb2a39d93e96cad61fc%7C1&sdata=iFBORcGPjln9bDh1d2vpOHAvjHAZuiNguvNwZSMJJ2g%3D&reserved=0"><font size=2 color=blue face="Calibri"><u>https://www.ibm.com/support/knowledgecenter/en/STXKQY_4.2.0/com.ibm.spectrum.scale.v4r2.adv.doc/bl1adv_dr.htm</u></font></a><font size=2 face="Calibri">? Seems to cover what you’re looking for..</font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri"> -jf</font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri">ons. 24. jan. 2018 kl. 07:33 skrev Harold
Morales <</font><a href=mailto:hmorales@optimizeit.co><font size=2 color=blue face="Calibri"><u>hmorales@optimizeit.co</u></font></a><font size=2 face="Calibri">>:</font><br><font size=3 face="Tahoma">Thanks for answering.</font><br><font size=3 face="Tahoma"> </font><br><font size=3 face="Tahoma">Essentially, the idea being explored is
to replicate LUNs between identical storage hardware (HP 3PAR volumesrein)
on both sites. There is an IP connection between storage boxes but not
between servers on both sites, there is a dark fiber connecting both sites.
Here they dont want to explore the idea of a scaled-based.</font><br><font size=2 face="Calibri"> </font><br><font size=2 face="Calibri">_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at </font><a href="https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fspectrumscale.org&data=01%7C01%7Cjohn.hearns%40asml.com%7C1e23d7bb660147eab5c908d562f93422%7Caf73baa8f5944eb2a39d93e96cad61fc%7C1&sdata=FVtmqVGOzo12QBMwvPxDS2Sl%2BXWJefLI5K73S7hT%2Fzw%3D&reserved=0" target=_blank><font size=2 color=blue face="Calibri"><u>spectrumscale.org</u></font></a><font size=2 color=blue face="Calibri"><u><br></u></font><a href="https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgpfsug.org%2Fmailman%2Flistinfo%2Fgpfsug-discuss&data=01%7C01%7Cjohn.hearns%40asml.com%7C1e23d7bb660147eab5c908d562f93422%7Caf73baa8f5944eb2a39d93e96cad61fc%7C1&sdata=iHSD5viqbXERH%2B9KaoPl12KeihSW0s4REJw%2F8T2MYBU%3D&reserved=0" target=_blank><font size=2 color=blue face="Calibri"><u>http://gpfsug.org/mailman/listinfo/gpfsug-discuss</u></font></a><p><font size=3>-- The information contained in this communication and
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