Tarsnap – Online backups for the truly paranoid
I see some comments here from people wondering why anyone would use this or searching for use cases. I&#x27;ll share mine.<p>I use tarsnap to keep daily backups of a web server with a handful of sites.  I send over their content, configuration, and database backups.  This isn&#x27;t $$$-critical stuff so I just make a once-daily database backup and I&#x27;m fine with that.  Every few months I verify one of the backups to make sure everything is still working, but it is extremely hands-off.  I just don&#x27;t have to think about it.<p>It is currently costing me about 3 cents per day.  I could probably reduce that a bit with some pruning.  It was 2 cents per day for a while.<p>Here is my most recent billing statement:<p><pre><code>  2016-01-26 Balance                   43.152827492555316729
    Client-&gt;Server Bandwidth   8.2MB    0.002069643750000000
    Server-&gt;Client Bandwidth  41.2kB    0.000010296000000000
    Daily storage             3.35GB    0.027041509164110040
  2016-01-27 Balance                   43.123706043641206689
</code></pre>
So far I have used a total of $7 of my $50 deposit.  Let&#x27;s hope Colin keeps the service running at least until I&#x27;ve worked through that. Might be a few more years, though.  Here are my statistics:<p><pre><code>  $ tarsnap --list-archives | wc -l
  496
  $ tarsnap --print-stats --humanize-numbers
                                         Total size  Compressed size
  All archives                               200 GB            86 GB
    (unique data)                            8.4 GB           3.3 GB
</code></pre>
It appears I have been using it for about 496 days.  I can access any specific day&#x27;s snapshot and download it if I need.  The 3.3GB here is the same as the 3.3GB for daily storage on my billing statement.  I&#x27;m guessing that is also very close to the total amount of Client-&gt;Server traffic I have generated in my account&#x27;s lifetime.  Probably within a few percent? Not sure if I can quickly verify though.