Blackmagic Disk Speed Test
By Blackmagic Design Inc
Open the Mac App Store to buy and download apps.
Disk Speed Test is an easy to use tool to quickly measure and certify your disk performance for working with high quality video! Simply click the start button and Disk Speed Test will write test your disk using large blocks of data, and then display the result. Disk Speed Test will continue to test writes and reads from your disk so you can evaluate both performance and readability over time.
What's New in Version 2.2.2
Improved compatibility with Mac OS X 10.10 Yosemite.
2.2.2 still crashing
Version 2.2 had worked worked on my system (Mac Pro tower OS X 10.9.5) until recently, but recently the app crashes any time I try to select another target drive. Works fine on startup disk. So, installed 2.2.2. Works fine on startup disk, but immediately crashes when attempting to select another target disk.
Just installed this onto my macbook 3,1 with SNow leopard. It crashes, refuses to even open.
Easy to use
I think this is the simplest app for measuring hard drive performance on the Mac.