<font size=2 face="sans-serif">>Site A:</font><br><font size=2 face="sans-serif">>Owns “fileset A1” which needs
to be replicated to Site B “fileset A2” the from Site B to Site C “fileset
A3”.</font><br><font size=2 face="sans-serif"> </font><br><font size=2 face="sans-serif">a. Is this required because A cannot
directly talk to C ?</font><br><font size=2 face="sans-serif">b. Is this network restriction ? </font><br><font size=2 face="sans-serif">c. Where is the data generated ? At
filesetA1 or filesetA2 or filesetA3 or all the places ? </font><br><br><font size=2 face="sans-serif">>Site B:</font><br><font size=2 face="sans-serif">>Owns “fileset B1” which needs
to be replicated to Site C “fileset B2”.</font><br><font size=2 face="sans-serif">> </font><br><font size=2 face="sans-serif">>Site C: </font><br><font size=2 face="sans-serif">>Holds all data from Site A and B
“fileset A3 & B2”.</font><br><font size=2 face="sans-serif"> </font><br><font size=2 face="sans-serif">Same as above, where is the data generated
?</font><br><br><font size=2 face="sans-serif"> </font><br><font size=2 face="sans-serif">>We have been looking into switching
the home and cache site so that data is generated at the cache sites which
will trigger GPFS to transfer the files to home as soon as possible but
as I have little to no experience with AFM I don’t know what happens to
>the cache site over time, does the cache site empty itself after a
while or does data stay there until manually deleted?</font><br><font size=2 face="sans-serif"> </font><br><font size=2 face="sans-serif">AFM single writer mode or independent-writer
mode can be used to replicate the data from the cache to home automatically.
</font><br><br><font size=2 face="sans-serif">a. Approximately how many files/data
can each cache(filesetA1, filesetA2 and fileesetB1) hold ?</font><br><font size=2 face="sans-serif">b. After the archival at the site C,
will the data get deleted from the filesets at C?</font><br><br><font size=2 face="sans-serif">~Venkat (vpuvvada@in.ibm.com)</font><br><br><br><br><font size=1 color=#5f5f5f face="sans-serif">From:
</font><font size=1 face="sans-serif">Lyle Gayne/Poughkeepsie/IBM</font><br><font size=1 color=#5f5f5f face="sans-serif">To:
</font><font size=1 face="sans-serif">gpfsug-discuss@spectrumscale.org,
Venkateswara R Puvvada/India/IBM@IBMIN</font><br><font size=1 color=#5f5f5f face="sans-serif">Date:
</font><font size=1 face="sans-serif">12/18/2019 08:03 PM</font><br><font size=1 color=#5f5f5f face="sans-serif">Subject:
</font><font size=1 face="sans-serif">Re: [EXTERNAL]
[gpfsug-discuss] Spectrum Scale mirrored filesets across sites.</font><br><hr noshade><br><br><br><font size=2 face="Arial">Adding Venkat so he can chime in.</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">Lyle</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">----- Original message -----<br>From: "Andi Nør Christiansen" <arc@b4restore.com><br>Sent by: gpfsug-discuss-bounces@spectrumscale.org<br>To: gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>Cc:<br>Subject: [EXTERNAL] [gpfsug-discuss] Spectrum Scale mirrored filesets across
sites.<br>Date: Wed, Dec 18, 2019 5:24 AM<br> </font><br><font size=2 face="Arial">Hi,</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">We are currently building a 3 site spectrum
scale solution where data is going to be generated at two different sites
(Site A and Site B, Site C is for archiving/backup) and then archived on
site three. </font><br><font size=2 face="Arial">I have however not worked with AFM much so
I was wondering if there is someone who knows how to configure AFM to have
all data generated in a file-set automatically being copied to an offsite.
</font><br><font size=2 face="Arial">GPFS AFM is not an option because of latency
between sites so NFS AFM is going to be tunneled between the site via WAN.
</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">As of now we have tried to set up AFM but
it only transfers data from home to cache when a prefetch is manually started
or a file is being opened, we need all files from home to go to cache as
soon as it is generated or at least after a little while. </font><br><font size=2 face="Arial">It does not need to be synchronous it just
need to be automatic. </font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">I’m not sure if attachments will be available
in this thread but I have attached the concept of our design. </font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">Basically the setup is :</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">Site A:</font><br><font size=2 face="Arial">Owns “fileset A1” which needs to be replicated
to Site B “fileset A2” the from Site B to Site C “fileset A3”.</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">Site B:</font><br><font size=2 face="Arial">Owns “fileset B1” which needs to be replicated
to Site C “fileset B2”.</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">Site C: </font><br><font size=2 face="Arial">Holds all data from Site A and B “fileset
A3 & B2”.</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">We do not need any sites to have failover
functionality only a copy of the data from the two first sites. </font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">If anyone knows how to accomplish this I
would be glad to know how! </font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">We have been looking into switching the home
and cache site so that data is generated at the cache sites which will
trigger GPFS to transfer the files to home as soon as possible but as I
have little to no experience with AFM I don’t know what happens to the
cache site over time, does the cache site empty itself after a while or
does data stay there until manually deleted?</font><br><font size=2 face="Arial"> </font><br><font size=2 face="Arial">Thanks in advance!</font><br><font size=2 face="Arial"> </font><br><a href="https://www.linkedin.com/company/b4restore-a-s/" target="_blank"><font size=2 color=#3c613e face="Arial">Best
Regards</font></a><br><font size=2 face="Arial"><br></font><img src=cid:_2_DA02B6A0DA02B284004B1C69652584D5 style="border:0px solid;"><font size=2 face="Arial"><br></font><font size=2 color=#3c613e face="Arial"><b><br>Andi Nør Christiansen</b><i><br>IT Solution Specialist</i></font><font size=2 face="Arial"><br></font><font size=2 color=#3c613e face="Arial"><br>Phone +45 87 81 37 39<br>Mobile +45 23 89 59 75<br>E-mail</font><font size=2 face="Arial"> </font><a href="mailto:" target="_blank"><font size=2 color=#2f2f2f face="Arial">arc@b4restore.com</font></a><font size=2 color=#3c613e face="Arial"><br>Web</font><font size=2 face="Arial"> </font><a href="http://www.b4restore.com/" target="_blank"><font size=2 color=#2f2f2f face="Arial">www.b4restore.com</font></a><br><font size=2 face="Arial"> </font><a href="https://www.linkedin.com/company/b4restore-a-s/" target="_blank"><img src=cid:_4_DA02C384DA02BFD0004B1C69652584D5 alt="B4Restore on LinkedIn" style="border:0px solid;"></a><font size=2 face="Arial"></font><a href="https://twitter.com/b4restore" target="_blank"><img src=cid:_4_DA02C814DA02BFD0004B1C69652584D5 alt="B4Restore on Facebook" style="border:0px solid;"></a><font size=2 face="Arial"> </font><a href="https://www.facebook.com/B4Restore" target="_blank"><img src=cid:_4_DA02CCBCDA02BFD0004B1C69652584D5 alt="B4Restore on Facebook" style="border:0px solid;"></a><font size=2 face="Arial"></font><a href="https://www.b4restore.com/en/about-us/newsletter" target="_blank"><img src=cid:_4_DA02D164DA02BFD0004B1C69652584D5 alt="Sign up for our newsletter" style="border:0px solid;"></a><br><a href="https://www.b4restore.com/report" target="_blank"><img src=cid:_4_DA02D88CDA02D4F8004B1C69652584D5 alt="Download Report" style="border:0px solid;"></a><br><font size=2 face="Arial"> </font><p><font size=2 face="Arial"> </font><br><tt><font size=2>_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org</font></tt><tt><font size=2 color=blue><u><br></u></font></tt><a href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss" target="_blank"><tt><font size=2 color=blue><u>http://gpfsug.org/mailman/listinfo/gpfsug-discuss</u></font></tt></a><tt><font size=2></font></tt><br><font size=2 face="Arial"> </font><br><br><BR>