title: BinaryFormatter alternatives
body: <p>A BinaryFormatter-serialized array of 128³ doubles, takes up 50 MB of space. Serializing an array of 128³ <em>struct</em>s with two <em>double</em> fields takes up 150 MB and over 20 seconds to process.</p>
  
  <p>Are there fast simple alternatives that would generate compact files? My expectation is that the above examples would take up 16 and 32 MB, respectively, and under two seconds to process. I took a look at protobuf-net, but it appears that it does not even support <em>struct</em> arrays.</p>
  
  <p>PS: I apologize for making a mistake in recording file sizes. The actual space overhead with BinaryFormatter is not large.</p>