On Sun, March 17, 2013 8:49 pm, Andre Felipe Machado wrote: > Hello, > Are there new suggestions of backup strategies for many very large mailboxes > (many GB and growing), with up to decades long retention period for deleted > messages also? > > I searched the list archives and found the 2009 and 2010 threads interesting, > but then proposed solutions may not scale to today and future needs. > > Guess that some form of tape archiving may be needed for such long periods. > > > Our initial idea was to use some form of tiered storage, and decades of > expunge delay. But messages flagged as deleted could sum up to millions on > each of such large mailboxes years ahead, maybe causing dificulties with large > directories (stat from tape backup sw, squatter). > Will hashing mailboxes directories option help? > Is there a clean way to move messages marked as deleted to another partition? > http://en.wikipedia.org/wiki/Linear_Tape_File_System > > > > Maybe, if cyrus becomes compatible with NFS, then HSM solutions like > http://www.openarchive.net could help. Andre, While, in general, participants in this forum still are pretty reluctant putting their Cyrus mailstores on NFS storage, there has been at least one architect/administrator of a very large Cyrus configuration pretty happy using NetApp filers and NFS as their underlying storage structure. When using intelligent storage (does not have to be NFS, sub-LUN tiering in block access methods (iSCSI, FC) will also do the job) you will be pushing the tiering issue down to your storage level, which may be (part of) a solution to your problem. Kind regards, Eric Luyten, Computing Centre VUB/ULB. ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
