AJA System Test Lite 4+

The app appears to work well but I can't find a way to select the target disk. When you open the app you can select the target disk. However once your in the app I can't find a way to change the target disk with out closing the app.

Thanks for a Great App.

This app (Lite version) shows read and write speeds to the volume you specify. It says it is designed for supporting video product work. I was told to use it as part of trying to identify some disk failure issues with an SSD connected to MacOS Sierra. It is a pretty mystifying piece of software actually, with no information about how to use it or what its results mean. The Lite version doesn't dump its results anywhere so you use screen capture I guess for recording results. You can use it to get some sense of the relative performance of different drives on different ports and interfaces (e.g. USB vs FW).. If it encounters a problem, you are SOL. On a write error, it just stops in its tracks, leaves its datafile on the drive, and has some difficulty using that drive again. I'm not sure what finally cleared that condition. It was interesting to see how bad the performance of a FW 800 drive was through a Thunderbolt adapter when compared to the same drive using USB3.

I'm amused by the reviewer who gave this app a low rating because it doesn't include a manual. Ma'am, it's a benchmark testing app intended for use by professionals who already know what all of the options mean without needing any explanation. While it can be helpful for others to use [ie, non professionals], you can't blame the publisher for being uninformed yoruself. If you looked at their website you'd find all sorts of products that you don't understand...but that wouldn't be their fault, now would it?

/rant

For the rest, who know what they are looking at, this app is great and needs no explanation. It works. Period.