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Re: Homebuilt NAS Advice

From Celejar <celejar@gmail.com>
Newsgroups linux.debian.user
Subject Re: Homebuilt NAS Advice
Date 2020-08-06 16:10 +0200
Message-ID <AAOKJ-342-3@gated-at.bofh.it> (permalink)
References (5 earlier) <AA1qG-6zE-21@gated-at.bofh.it> <AA5DY-Cu-5@gated-at.bofh.it> <AAiBb-a8-1@gated-at.bofh.it> <AAsqR-6fO-1@gated-at.bofh.it> <AAL0A-KM-129@gated-at.bofh.it>
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On Thu, 6 Aug 2020 05:02:17 -0500
Leslie Rhorer <lesrhorer@att.net> wrote:

> On 8/5/2020 9:11 AM, Stefan Monnier wrote:
> >> 	I prefer DAR for several reasons.  First of all, as I mentioned
> >> 	before, DAR is the only backup solution of which I am aware that can
> >> 	restore not only deleted or corrupted files, but which can also
> >> 	restore deletions. This means DAR can restore any or all files one
> >> 	chooses in a batch, but then if requested can go back and delete
> >> 	files which were deleted at a later time but prior to additional
> >> 	DAR backups.
> > 
> > I find it hard to believe that it's a rare feature.
> > 
> > The system I use (`bup`) does support that as well (every backup is
> > (more or less) a Git commit, so it doesn't distinguish full-backups from
> > incrementals), but it doesn't bother to mention it probably because it's
> > very basic.
> 
> 	Uh-uh.  Full, incremenal, and decremental backups are all completely 
> different than deletion restoral.  A GIT commit is somewhat similar, as 
> is a VM snapshot, but they also are not quite the same.
> 
> 	All I can say is, "I  suggest you read all the features - it is quite a 
> long list - and try it."

I (and I suspect others here) are still pretty confused about what you
are trying to explain to us. Here's what I do, and do not, understand:

* Incremental and differential backups are backups of the delta between
the last full backup and the current system state (either individually
[differential] or collectively [incremental])

* I have no idea (nor do Google, DuckDuckGo, or Wikipedia) what a
"decremental backup" is.

* Borg doesn't fit the "full / differential / incremental" paradigm
neatly, but it certainly has some of the advantages of differential /
incremental backups (plus others that classic differential /
incremental ones do not have, such as deduplication - i.e., if the
backup source contains multiple copies of some data, that dataonly
needs to be stored once in the backup target).

* I don't know exactly what you mean by "deletion restoral", but Borg
(and, I assume, many other good backup solutions) offers a
flexible variety of methods to restore deleted files, and / or to
restore a snapshot of the backup source as it existed at a given point
in time: https://docs.borgbase.com/restore/

If you are willing to explain further, that would be appreciated.
Thanks!

Celejar

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Thread

Homebuilt NAS Advice Patrick Bartek <patrick.bartek@gmail.com> - 2020-07-29 22:00 +0200
  Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-07-29 22:20 +0200
    Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-07-29 22:30 +0200
      Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-07-29 23:40 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <patrick.bartek@gmail.com> - 2020-07-30 02:50 +0200
      Re: Homebuilt NAS Advice Tom Dial <tddial@comcast.net> - 2020-07-30 22:50 +0200
        Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 01:40 +0200
          Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-02 03:10 +0200
            Re: Homebuilt NAS Advice Keith Bainbridge <ke1th3216@gmail.com> - 2020-08-02 04:50 +0200
              Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-02 06:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 21:30 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 22:10 +0200
          Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 06:10 +0200
            Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-03 17:30 +0200
              Re: Homebuilt NAS Advice Dan Ritter <dsr@randomstring.org> - 2020-08-03 17:40 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 18:40 +0200
                Re: Homebuilt NAS Advice <tomas@tuxteam.de> - 2020-08-03 19:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-03 22:00 +0200
                Re: Homebuilt NAS Advice <tomas@tuxteam.de> - 2020-08-03 22:20 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-03 23:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:50 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:40 +0200
    Re: Homebuilt NAS Advice Anssi Saari <as@sci.fi> - 2020-07-30 10:00 +0200
      Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-07-30 13:20 +0200
  Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-07-30 01:50 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-07-30 23:40 +0200
    Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-08 01:30 +0200
      Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 03:30 +0200
        Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 14:40 +0200
  Re: Homebuilt NAS Advice Peter Ehlert <peter@sdi-baja.com> - 2020-07-30 19:00 +0200
    Re: Homebuilt NAS Advice Charles Curley <charlescurley@charlescurley.com> - 2020-07-30 21:50 +0200
      Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-07-31 13:10 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-07-30 23:30 +0200
      Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-02 01:50 +0200
        Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-08-02 17:50 +0200
  Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-03 17:20 +0200
    Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-04 00:10 +0200
      Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-04 01:20 +0200
        Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-04 10:40 +0200
          Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-04 11:30 +0200
            Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-04 16:00 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-04 16:30 +0200
              Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 05:50 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-05 16:20 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 17:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-05 17:40 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 12:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 16:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 17:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 18:10 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-07 18:30 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-07 19:40 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-08 00:10 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 04:30 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-09 11:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 17:00 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 18:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 19:20 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-09 23:50 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-10 00:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:50 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-09 18:40 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 23:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 05:30 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-07 18:30 +0200
                Re: Homebuilt NAS Advice rhkramer@gmail.com - 2020-08-06 17:20 +0200
                Re: Homebuilt NAS Advice Celejar <celejar@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 18:20 +0200
        Re: Homebuilt NAS Advice Andrei POPESCU <andreimpopescu@gmail.com> - 2020-08-04 17:20 +0200
          Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 06:20 +0200
        Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 04:30 +0200
          Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 09:20 +0200
            Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-05 11:00 +0200
              Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 21:00 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 03:50 +0200
                Re: Homebuilt NAS Advice Kushal Kumaran <kushal@locationd.net> - 2020-08-06 06:20 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 04:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 05:50 +0200
            Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 12:30 +0200
      Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 12:30 +0200
        Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-05 21:10 +0200
          Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-05 23:30 +0200
            Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 00:30 +0200
              Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 01:20 +0200
                Re: Homebuilt NAS Advice Jonathan Dowland <jon+debian-user@dow.land> - 2020-08-08 09:10 +0200
              Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 04:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 04:50 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 06:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 07:10 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-06 07:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-06 18:10 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-06 18:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 03:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-07 03:20 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 05:00 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 05:40 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 08:00 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-07 08:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-07 09:10 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-07 17:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 01:40 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-08 04:50 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-08 22:30 +0200
                Re: Homebuilt NAS Advice Stefan Monnier <monnier@iro.umontreal.ca> - 2020-08-09 00:20 +0200
                Re: Homebuilt NAS Advice deloptes <deloptes@gmail.com> - 2020-08-09 01:30 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-09 22:40 +0200
                Re: Homebuilt NAS Advice David Christensen <dpchrist@holgerdanske.com> - 2020-08-10 00:30 +0200
                Re: Homebuilt NAS Advice Leslie Rhorer <lesrhorer@att.net> - 2020-08-10 01:30 +0200
    Re: Homebuilt NAS Advice Patrick Bartek <nemommxiv@gmail.com> - 2020-08-04 06:30 +0200

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