I've started putting up disk and controller test data in this forum, as it relates to the StableBit Scanner's ability to gather SMART and Identify data using various disk controllers.
Direct I/O Test
"Direct I/O" is a set of technologies that the StableBit Scanner uses to read data directly from the disk. I collect my test results using an internal Direct I/O testing tool.
You can get the latest version here: Download
The tool will probe your disk and controller for various forms of data that the StableBit Scanner uses and will display either a green check mark or a red X to indicate whether the probe was successful. At the bottom, it will list the probing "methods" that were successfully used to probe the controller / disk.
If you're interested in contributing your test data to this forum, then just run the tool and select a disk that is connected to the controller that you want to probe.
Make sure that your computer is not doing anything else while probing. There is a small chance that the probing process will crash your system.