Adam Goryachev wrote: > Holger Parplies wrote: >> a) rsync full backups are only minimally more expensive than incrementals in >> terms of bandwidth. Still, every file needs to be completely read from >> disk >> on both sides, so there is a good reason to offer an "incremental" mode as >> a speedup. > > BTW, 2 x rsync incrementals of the same level will transfer more data > than one full + one incremental. So for example, doing 6 incrementals > followed by a full backup can in fact transfer a lot more data than > doing 7 full backups. > > eg, if a file changes after the full backup, then each incremental > backup will re-transfer those changes. While a full will transfer the > changes but the following full/incremental will not re-transfer those > changes. > This situation can be avoided by setting IncrLevels to 1, 2, 3, 4, 5, 6
This way each incremental is based on the previous incremental, and not the previous full. (Assuming you get a full backup every 7 days). -Rob ******************************************************** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. If you are not the addressee, any disclosure, reproduction, copying, distribution, or other dissemination or use of this transmission in error please notify the sender immediately and then delete this e-mail. E-mail transmission cannot be guaranteed to be secure or error free as information could be intercepted, corrupted lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard copy version. ******************************************************** ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ 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/
