<div class="socmaildefaultfont" dir="ltr" style="font-family:Arial;font-size:10.5pt" ><div dir="ltr" >Spectrum scale already supports external tiering to say tape.</div>
<div dir="ltr" ><a href="http://www.zurich.ibm.com/sto/systems/bigdata.html" >http://www.zurich.ibm.com/sto/systems/bigdata.html</a></div>
<div dir="ltr" > </div>
<div dir="ltr" >Here the GPFS policy engine is used to select which files to migrate based on say the filesize or date of last access.</div>
<div dir="ltr" >The file metadata remains in the filesystem and so 'ls -l' etc still still show the files whether it is migrated or not.</div>
<div dir="ltr" >The first block of each file is also kept online such that 'head' and 'file' still work quickly without having to fetch any data from the remote store.</div>
<div dir="ltr" >The file content itself is migrated away to be fetched back automatically when the file is next accessed. It goes back to the storage pool that it was migrated from.</div>
<div dir="ltr" > </div>
<div dir="ltr" >The next release of Spectrum Scale with extend the above to allow generic backend object stores as well as tape</div>
<div dir="ltr" >The feature name has not yet been given a name, but has been refereed to as MCstore ('Multi-Cloud Storage') in previous discussions.</div>
<div dir="ltr" > </div>
<div dir="ltr" >Indeed MCstore has been mentioned as long ago as Feb 2015 by IBM on the mailing lists</div>
<div dir="ltr" ><a href="http://www.spectrumscale.org/pipermail/gpfsug-discuss/2015-February/000639.html" >http://www.spectrumscale.org/pipermail/gpfsug-discuss/2015-February/000639.html</a></div>
<div dir="ltr" >and that follows early announcement at IBM Insight in 2014</div>
<div dir="ltr" >If you google for MCstore you may find more detailed information.</div>
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<div dir="ltr" > </div>
<div dir="ltr" > </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" >----- Original message -----<br>From: "service@metamodul.com" <service@metamodul.com><br>Sent by: gpfsug-discuss-bounces@spectrumscale.org<br>To: gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>Cc:<br>Subject: [gpfsug-discuss] IBM Spectrum Scale transparent cloud tiering<br>Date: Fri, Jan 29, 2016 11:51 AM<br>
<div>Hi</div>
<div>i saw in the GPFS Forum somebody mentioning IBM Spectrum Scale transparent cloud tiering http://www.ibm.com/developerworks/servicemanagement/tc/gpfs/evaluate.html</div>
<div> </div>
<div>Thus the question. Does somebody knows how that - the tiering into clould services - is technical done and what limitations exist ?</div>
<div> </div>
<div>tia</div>
<div>Hajo</div>
<div><font face="Default Monospace,Courier New,Courier,monospace" size="2" >_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br><a href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss" target="_blank" >http://gpfsug.org/mailman/listinfo/gpfsug-discuss</a></font></div></blockquote>
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