Hi guys, I was finding conflicting information on how to determine the ideal block or chunk size when setting up a RAID so I did a little test myself. This is using two 1 TB SSD drives set up in a RAID 0 configuration using the NewerTech 6G-1e1i on a Mac Pro 5,1. With the lowest setting block size of 16K, I got 658MBs write, and 906MBps read. And with the highest block size of 256K, I got 687MBps write, and 910MBps read. Now, I am a video editor, and the Blackmagic disk speed test is configured to test for speeds for a typical video editing scenario, so it's not representative of the performance you would get if you were, say, managing a database, but it pretty much confirmed my suspicions that with 2 drives, the block size really doesn't matter for big files since the load will be distributed pretty evenly across those drives. Hope this helps anyone.