On Fri, Feb 19, 2010 at 9:53 AM, Timothy J Massey <tmas...@obscorp.com> wrote: > Mike Bydalek <mbyda...@compunetconsulting.com> wrote on 02/19/2010 > 11:28:25 AM: > >> Thanks for all the input. I'm starting to fully understand how >> BackupPC scheduling is working now. My apologies for not stating that >> I was/am using rsync as it is the only choice that makes sense =) > > In which case, after your first (potentially very long) full backup, the > rest of the system should work very well. Caveats: how big are the files > that are changing (given an equal number of files changing per day, small > files are easier than large files), and how much total data changes on a > daily basis. > > If you're making gigabytes of changes per day, nothing will help you: > you'll be limited by the bandwidth. If you're making small changes but to > very large files, you will have to hash the entire file of each of these > files, and disk performance on *both* ends will be the limiting factor. > Also, your incrementals will likely be almost as long as your fulls. > > But if you're making a relatively small number of changes to a relatively > small number of relatively small files (such as your typical office file > server), BackupPC will work outstandingly. > > This is not to seem that BackupPC is somehow limited. It's not: I run it > on all *kinds* of servers. But you have to be aware of the limitations. > *Lots* of files (such as a large mail server that stores each e-mail in > its own file), very large files that change every day (such as mail > servers with a monolithic datastore (yes, Exchange, I'm looking at > *you*)), or simply lots of new data generated daily (things like HPC > clusters that create *gigabytes* of new data daily) will require special > attention, design and tuning. > > Tim Massey
Tim, You're absolutely right. I've been rdiff-backup for years, but was looking for something with a nice GUI frontend to help with restores. Not a fan of having to restore a single file when the wife accidentally over-wrote something ;) -Mike ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/