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<p class="MsoNormal">Our existing environments are using Scale+Protect with tape. Management wants us to move away from tape where possible.<o:p></o:p></p>
<p class="MsoNormal">We do one filesystem per cluster. So, there will be two new clusters.<o:p></o:p></p>
<p class="MsoNormal">We are still finalizing the sizing, but the expectation is both of them will be somewhere in the3-5PB range.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We understand that if we replicate corrupted data, the corruption will go with it. But the same would be true for a backup (unless I am not quite following you).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The thought is that not using Protect and simply doing replication with snapshots will enable faster recovery from a catastrophic failure of the production environment, whereas with Protect we would have to restore petabytes of data.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">FWIW, this is the same method we are using in our NAS (Isilon), but those utilities are designed for that type of use, and there is no equivalent to mmbackup. Our largest Scale environment is 7+PB, and we can complete a backup of it in
one night with mmbackup. We abandoned tape backups on our NAS at around 600TB.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black"><gpfsug-discuss-bounces@spectrumscale.org> on behalf of Andrew Beattie <abeattie@au1.ibm.com><br>
<b>Reply-To: </b>gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Date: </b>Tuesday, May 8, 2018 at 4:38 PM<br>
<b>To: </b>"gpfsug-discuss@spectrumscale.org" <gpfsug-discuss@spectrumscale.org><br>
<b>Cc: </b>"gpfsug-discuss@spectrumscale.org" <gpfsug-discuss@spectrumscale.org><br>
<b>Subject: </b>Re: [gpfsug-discuss] Snapshots for backups<o:p></o:p></span></p>
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<p class="MsoNormal"><a name="_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">Hi Jonathan,<o:p></o:p></span></a></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">First off a couple of questions:<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">1) your using Scale+Protect with Tape today?<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">2) your new filesystems will be within the same cluster ?<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">3) What capacity are the new filesystems<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">Based on the above then:<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">AFM-DR will give you the Replication that you are talking about -- please talk to your local IBM people about the limitations of
AFM-DR to ensure it will work for your use case<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">Scale supports snapshots - but as mentioned snapshots are not a backup of your filesystem - if you snapshot corrupt data you will
replicate that to the DR location<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">If you are going to spin up new infrastructure in a DR location have you considered looking at an object store and using your existing
Protect environment to allow you to Protect environment to HSM out to a Disk basked object storage pool distributed over disparate geographic locations? (obviously capacity dependent)<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><b><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#7C7C5F">Andrew Beattie<o:p></o:p></span></b></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Software Defined Storage - IT Specialist<o:p></o:p></span></b></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><b><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#336699">Phone:
</span></b></span><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:8.0pt;font-family:"Arial",sans-serif">614-2133-7927<o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><b><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#336699">E-mail:
</span></b></span><span style="mso-bookmark:_MailOriginalBody"></span><a href="mailto:abeattie@au1.ibm.com"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:#555555">abeattie@au1.ibm.com</span></span><span style="mso-bookmark:_MailOriginalBody"></span></a><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:8.0pt;font-family:"Arial",sans-serif"><o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif">----- Original message -----<br>
From: "Fosburgh,Jonathan" <jfosburg@mdanderson.org><br>
Sent by: gpfsug-discuss-bounces@spectrumscale.org<br>
To: gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
Cc:<br>
Subject: [gpfsug-discuss] Snapshots for backups<br>
Date: Tue, May 8, 2018 11:43 PM<br>
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<o:p></o:p></span></span></p>
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<p><span style="mso-bookmark:_MailOriginalBody"><span style="font-family:"Arial",sans-serif">We are looking at standing up some new filesystems and management would like us to investigate alternative options to Scale+Protect. In particular, they are interested
in the following:</span></span><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></span></p>
<p><span style="mso-bookmark:_MailOriginalBody"><span style="font-family:"Arial",sans-serif"> </span></span><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></span></p>
<p><span style="mso-bookmark:_MailOriginalBody"><span style="font-family:"Arial",sans-serif">Replicate to a remote filesystem (I assume this is best done via AFM).</span></span><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></span></p>
<p><span style="mso-bookmark:_MailOriginalBody"><span style="font-family:"Arial",sans-serif">Take periodic (probably daily) snapshots at the remote site.</span></span><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></span></p>
<p><span style="mso-bookmark:_MailOriginalBody"><span style="font-family:"Arial",sans-serif"> </span></span><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></span></p>
<p><span style="mso-bookmark:_MailOriginalBody"><span style="font-family:"Arial",sans-serif">The thought here is that this gives us the ability to restore data more quickly than we could with tape and also gives us a DR system in the event of a failure at the
primary site. Does anyone have experience with this kind of setup? I know this is a solution that will require a fair amount of scripting and some cron jobs, both of which will introduce a level of human error. Are there any other gotchas we should be aware
of?</span></span><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.0pt;font-family:"Courier New"">_______________________________________________<br>
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<p class="MsoNormal"><span style="mso-bookmark:_MailOriginalBody"><span style="font-size:10.5pt;font-family:"Arial",sans-serif"> <o:p></o:p></span></span></p>
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