On 6/21/2010 11:44 AM, Josh Malone wrote: ... > When using rsync, only the block differences are EVER sent across the wire > (unless you add '--whole-files' to the cmdline, IIRC). In backuppc, the > only difference between a full and an incremental is how rsync determines > what data to send. In an incremental, files are checked via last-modified > time; in a full backups, a block-level compare is done across all files. > This means the only real performance hit on a full backup is that the > client rsync must read every block of every file -- but no extra data is > sent across the wire.
This is great information. I'm going to have to watch what goes over the wire. I'm a firm believer in backing stuff up and letting the software sort out the details... this suits that philosophy well. If I see anything interesting in the transfer numbers, I'll post my findings here. Thank you, -Mike ------------------------------------------------------------------------------ ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo _______________________________________________ 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/
