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Re: Remote Backup Strategy

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JF,

I would not mess too much with the innards of TimeMachine. If you set
it up right it'll work fine.


I have on both my practice iMac and the trashcan at the house a WiFi
Time Machine each, and a 4-TB USB hard drive each.  On the trashcan for
test purposes even a second USB drive.

Speedtest shows:

	 Hosted by Telecom Namibia (Windhoek) [0.32 km]: 74.348 ms
	 Download: 12.42 Mbit/s
	 Upload: 7.35 Mbit/s

I use Unison file synchronizer to sync my home directory (and a few
others) between the trashcan (as a "hub") the practice iMac, my two
laptops and a Mini & an iMac outside of the country.

Once the first backup is done Unison figures out what to do (changes) by
itself, you can use the GUI to keep an eye on things but it is so
reliable that I hardly ever use it in favor of the CLI which I kick off
by way of some bash scripts/macros.

Then some more bash scripts to backup the practice system (running on my
secretary's Windows 10) using FirebirdSQL's tools and besides parking
those on the internal HD (where Time Machine gets them) also putting
them onto an external HD and SCPing them to my trashcan plus onto an old
XServe (80 Gig, 10.5.8, up 461 days) in the local Telco's data center.

These scripts are wired into the launchd (via Lingon X) and so run at
night.  The backups are restored into a virgin practice system once in a
while by IT Support to confirm restorability (which is an important
point).

When I had a serious hard disk crash in the practice a while back it
took an afternoon to get to the same state, just needed to update OSX to
latest and Time Machine worked its magic via the Install/Migration
Assistant. No drama whatsoever.

When the Windoze hard disk crashed, IT Support replaced it, reinstalled
W10 from scratch, we loaded the backups, tweaked a little here and there
and added the day's worth of patients from the paper files.  No drama
whatsoever.


When I get a new laptop, I also install from its predecessor's Time
Machine, but once in a while I do it manually from scratch (from my
handbook to see whether what's in there is still current) and then use
Unison to sort out the home directory. Valuable exercise.

There are very small 1-4 TB external USB SSDs these days, I have one for
the travel lap top of 1 TB USB-C and a little bigger than a match box.

I run that as Time Machine before I travel (and take it with in a
separate bag), never mind the WiFi one, so if you are worried get one
like that, run TM before you leave the house and take with, but then of
course in Canada the houses are build to spec :-)-O so I wouldn't worry
too much.

If the XServe dies, buy an ARM Mini :-)-O

Get Starlink :-)-O

el



On 13/07/2021 07:59, JF Mezei wrote:
> Server: Snow Leopard, XServe system disk: 160GB.
> 
> mac:  2013 Trash Can, High Sierra.  room for 3 move M.2 SSDs in external
> cabinet.
> 
> Due to regulatory capture of CRTC in Canada, I have no Internet in terms
> of using remote cloud services. (upload speed below 1mbps).
> 
> 
> The collapse in Miami has reminded me that for any type of emergency, I
> need to bring my disk drives with me because they'll never allow me back
> in building.
> 
> I know that making a DMG from a running system disk is problematic and
> requires a lot of fixing up after the fact to be able to open it (even
> though the creation of .DMG appeared to work).
> 
> Since I have time machine on the Xserve, I can just pickup "Latest"
> from it whenever I make manual backups to the Mac.
> 
> Generally, my connection  betwene Mac and Xserve is via AFP. (Snow
> Leopard has very old SMB and I tried it once and got corrupted files).
> 
> I am leaning on utiling disk utility to create a .DMG on the  Mac's SSD.
> Single file that won't clutter my Mac's file syste, file indexing,
> spotlight etc.
> 
> and a .DMG of HFS+ system can be stored on APFS without problem.
> 
> Sicne a time machine has a gazillion file hard links, is it correct to
> state the .DMG will not have any issues and will just backup the
> "Latest" directory structure with each file in it backed with its
> contents?  (aka: not just an empty file with link to original without
> original contents backed up).
> 

-- 
To email me replace 'nospam' with 'el'

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Thread

Remote Backup Strategy JF Mezei <jfmezei.spamnot@vaxination.ca> - 2021-07-13 01:59 -0400
  Re: Remote Backup Strategy nospam <nospam@nospam.invalid> - 2021-07-13 09:41 -0400
  Re: Remote Backup Strategy Wolffan <akwolffan@zoho.com> - 2021-07-13 10:02 -0400
    Re: Remote Backup Strategy JF Mezei <jfmezei.spamnot@vaxination.ca> - 2021-07-13 16:00 -0400
      Re: Remote Backup Strategy nospam <nospam@nospam.invalid> - 2021-07-13 16:13 -0400
      Re: Remote Backup Strategy Lewis <g.kreme@kreme.dont-email.me> - 2021-07-13 20:47 +0000
      Re: Remote Backup Strategy Wolffan <akwolffan@zoho.com> - 2021-07-13 18:58 -0400
        Re: Remote Backup Strategy Alan Baker <notonyourlife@no.no.no.no> - 2021-07-13 16:01 -0700
        Re: Remote Backup Strategy nospam <nospam@nospam.invalid> - 2021-07-13 19:15 -0400
  Re: Remote Backup Strategy Dr Eberhard Lisse <nospam@lisse.NA> - 2021-07-13 17:34 +0200
  Re: Remote Backup Strategy JF Mezei <jfmezei.spamnot@vaxination.ca> - 2021-07-19 20:26 -0400
    Re: Remote Backup Strategy JF Mezei <jfmezei.spamnot@vaxination.ca> - 2021-07-20 02:59 -0400
      Re: Remote Backup Strategy JF Mezei <jfmezei.spamnot@vaxination.ca> - 2021-07-20 20:31 -0400

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