<p><pre><code>  &gt; I&#x27;d have first deployed existing, native code along with 
  &gt; Rust in parallel using the data splitting technique so 
  &gt; some is saved with original and some with Rust.
</code></pre>
Yes, this is how Dropbox tests all of their features, and they did this with their new Rust-based storage engine as well. This tool has been in development for over a year by now and has seen extensive multi-stage testing (at first handling only a few terabytes of data, then &quot;just&quot; petabytes, and now exabytes).