Naively it seems difficult to decrease the ratio of 1.8x while simultaneously increasing availability. The less duplication, the greater risk of data loss if an AZ goes down? (I thought AWS promises you have a complete independent copy in all 3 AZs though?)
To me though the idea that to read like a single 16MB chunk you need to actually read like 4MB of data from 5 different hard drives and that this is faster is baffling.
To me though the idea that to read like a single 16MB chunk you need to actually read like 4MB of data from 5 different hard drives and that this is faster is baffling.