[Info-vax] BACKUP, rsync, Time Machine (was: Re: Re; Spiralog, RMS Journaling...)

[lawrencedo99 at gmail.com]

On Monday, June 20, 2016 at 2:47:43 AM UTC+12, Stephen Hoffman wrote:

> rsync is somewhat analogous to Time Machine in that both copy files 
> around.  But the two differ.  rsync is a remote synchronization tool.  
> Time Machine is a backup tool, and maintains months or years of 
> previous versions of files over one or more local or remote backup 
> target volumes, as well as providing the ability to restore and boot 
> the recovered volume(s), among other differences from rsync.  TM avoids 
> storing duplicate copies of a file, though does not provide the file or 
> sector-level de-dupling available with some storage systems.  Having 
> used both, TM and rsync are different targets and different users and 
> different implementations.

rsync does all that and more.