Currently the backup I'll be syncing comes in at ~140gib, so it shouldn't be too hard to ensure that we have at least twice that on the sync drive. & I'll look into the --inplace option, cheers. Thanks very much for your advice, there -- good to know I'm on the right track! Cheers, Doug.
2009/4/24 Tony Travis <a.tra...@abdn.ac.uk> > doug livesey wrote: > > [...] > > I'd really appreciate any advice that folks could give me on this -- am > > I wrong in my ideas? would this even work? are there any hideous > > pitfalls awaiting me? is there a better way to do it? etc. > > Hello, Doug. > > I manage a network of 31 Ubuntu-based bioinformatics servers in Europe, > and I use rsync to replicate local backups remotely for critical > machines. You need to bear in mind several things, not least of which is > the network bandwidth that is actually available to you. > > There are also some limitations to rsync that you should be aware of. In > particular, by default rsync doesn't remove the existing old file on the > remote end until the transfer completes successfully. Not a problem if > you have lots of disk space on your remote backup server, but it's a BIG > problem if you don't because the rsync's never succeed :-( > > Another problem that I've encountered is that rsync can be very slow > updating BIG files. This is because it has to calculate checksums for > all the blocks in both files before deciding which block to transfer. > What I've done in this situation (space tight on the remote server and > BIG files being rsync'ed) is to use the rsync --inplace option. > > Bye, > > Tony. > -- > Dr. A.J.Travis, University of Aberdeen, Rowett Institute of Nutrition > and Health, Greenburn Road, Bucksburn, Aberdeen AB21 9SB, Scotland, UK > tel +44(0)1224 712751, fax +44(0)1224 716687, http://www.rowett.ac.uk > mailto:a.tra...@abdn.ac.uk, > http://bioinformatics.rri.sari.ac.uk/~ajt<http://bioinformatics.rri.sari.ac.uk/%7Eajt> > > -- > ubuntu-uk@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk > https://wiki.ubuntu.com/UKTeam/ >
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