Hi Creating a new FS sounds like a best way to go. NSDv2 being a very good reason to do so.
AFM for migrations is quite good, latest versions allows to use NSD protocol for mounts as well. Olaf did a great job explaining this scenario on the redbook chapter 6 http://www.redbooks.ibm.com/abstracts/sg248254.html?Open -- Cheers > On 10 Oct 2016, at 23.05, Buterbaugh, Kevin L > <kevin.buterba...@vanderbilt.edu> wrote: > > Hi Mark, > > The last time we did something like this was 2010 (we’re doing rolling > refreshes now), so there are probably lots of better ways to do this than > what we did, but we: > > 1) set up the new hardware > 2) created new filesystems (so that we could make adjustments we wanted to > make that can only be made at FS creation time) > 3) used rsync to make a 1st pass copy of everything > 4) coordinated a time with users / groups to do a 2nd rsync when they weren’t > active > 5) used symbolic links during the transition (i.e. rm -rvf > /gpfs0/home/joeuser; ln -s /gpfs2/home/joeuser /gpfs0/home/joeuser) > 6) once everybody was migrated, updated the symlinks (i.e. /home became a > symlink to /gpfs2/home) > > HTHAL… > > Kevin > >> On Oct 10, 2016, at 2:56 PM, mark.b...@siriuscom.com wrote: >> >> Have a very old cluster built on IBM X3650’s and DS3500. Need to refresh >> hardware. Any lessons learned in this process? Is it easiest to just build >> new cluster and then use AFM? Add to existing cluster then decommission >> nodes? What is the recommended process for this? >> >> >> Mark >> This message (including any attachments) is intended only for the use of the >> individual or entity to which it is addressed and may contain information >> that is non-public, proprietary, privileged, confidential, and exempt from >> disclosure under applicable law. If you are not the intended recipient, you >> are hereby notified that any use, dissemination, distribution, or copying of >> this communication is strictly prohibited. This message may be viewed by >> parties at Sirius Computer Solutions other than those named in the message >> header. This message does not contain an official representation of Sirius >> Computer Solutions. If you have received this communication in error, notify >> Sirius Computer Solutions immediately and (i) destroy this message if a >> facsimile or (ii) delete this message immediately if this is an electronic >> communication. Thank you. >> >> Sirius Computer Solutions >> _______________________________________________ >> gpfsug-discuss mailing list >> gpfsug-discuss at spectrumscale.org >> http://gpfsug.org/mailman/listinfo/gpfsug-discuss > > — > Kevin Buterbaugh - Senior System Administrator > Vanderbilt University - Advanced Computing Center for Research and Education > kevin.buterba...@vanderbilt.edu - (615)875-9633 > > > Ellei edellä ole toisin mainittu: / Unless stated otherwise above: Oy IBM Finland Ab PL 265, 00101 Helsinki, Finland Business ID, Y-tunnus: 0195876-3 Registered in Finland
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