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From Bob Archer <Bob.Arc...@amsi.com>
Subject RE: Getting started with subversion
Date Thu, 15 Jul 2010 16:53:50 GMT
> On Thu, Jul 15, 2010 at 12:29, Bob Archer <Bob.Archer@amsi.com>
> wrote:
> >> Let's get through this one step at a time:
> >>
> >> First of all, if you are trying to use Subversion just to
> version
> >> your
> >> own designs and files, you are probably better off with
> >> TimeMachine.
> >> It versions your files and is very simple to use. All you need
> is a
> >> $100 USB hard drive to connect to your Mac. Remember that it
> isn't
> >> if
> >> your hard drive will fail, it is when, so the $100 investment is
> >> your
> >> guarantee that you won't lose your valuable work.
> >
> > Just to clarify, TimeMachine doesn't really version your file. It
> does a back up every hour of any files that have changed. So, if
> you change the file 4 times in one hour you can't go back to "any"
> of those revisions... just the last one TM backed up each hour.
> >
> 
> Also, at the end of each week (I think - it kind of depends on how
> much space you have. Regardless, it's some set time period), those
> hourlies get deleted and you only have a snapshot of the end of
> each
> day. Then just the end of each week. And when you're out of space
> entirely, the weeklies start getting deleted, oldest first. You do
> not
> have an eternal, complete history of each file with TM.

Yes, to be fully technical it does an hourly, daily, weekly, monthly. It deletes oldest data
first if it runs out of room. It uses links to good effect. From a MacWorld article:

"Time Machine keeps all of the day's backups for 24 hours, but then it begins to delete older
versions to save space. You can count on it to keep the first backup of any given day for
an entire month. Even after a month, it preserves the first backup of each week until your
disk is nearly full. Only at that point does the program begin purging files from your oldest
weekly backups. The net result is that you see your files as they appeared at many points
in the past, though not all points in the past."

My point was that is doesn't version/backup each change. So, that shouldn't be expectecd.


> That said, I think TM is a great backup system for the average
> user;
> it's saved me a couple times, and I really wish there was something
> comparable for my XP system I have to use for work.

I think something like this comes as a client to Windows home server although it is a daily
backup and I'm not sure if you can go back in time. I'm sure there are 3rd party backup systems
that work like TimeMachine for Windows. If not, maybe I will write one using svn 1.7 source
code as a base, sell it an become filthy rich!

BOb


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