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

[Stephen Hoffman]

On 2016-06-20 23:55:47 +0000, lawrencedo99 at gmail.com said:

> On Tuesday, June 21, 2016 at 1:13:49 AM UTC+12, Stephen Hoffman wrote:
>> On 2016-06-20 10:13:41 +0000, Lawrence D’Oliveiro said:
>> 
>>> rsync basically answers the question “given a source directory «src»>> 
>>> and a destination directory «dst», what is the minimum that needs to 
>>> be>> done to the contents of «dst» to turn it into an exact copy of 
>>> «src»?”
>> 
>> Which is only part of what Time Machine does.  You're obligated to> 
>> maintain multiple rsync targets, if you want any depth to your backups.
> 
> I have a script to do that. Backup run twice a day for one client, 
> going back a week. (This is separate from the backup service provided 
> by the central IT department.)

Good on you.   Got time-based restoration of files and directories, and 
bootable whole-disk restoration, and fully automated hourly backup 
processing with increasing pruning over time and pruning for target 
capacity?  Got the ability to store just the deltas across those 
different output directory targets akin to a CVS (akin to stacking up 
incrementals using OpenVMS BACKUP, or what most CVS packages implement 
internally)?  Great!  You've managed to get rsync much closer than what 
most folks using it have done.



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