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
New graphics for Retina display support
Some SSD's use hidden compression when writing data to make their benchmarked speeds appear faster. Disk Speed Test will now measure the true speed of these SSD's so you know if they are suitable for high quality uncompressed video capture.
This is an excellent app for quickly gauging hard drive speed. Some of the critism is un-warranted, and definitly comes from those with very little experience reading numbers related to computers. One of the reviewers mentioned that this app ruined there little SD card, that was plugged into an adapter, most likely shoved into an SD slot (of course). I am sure jolting the little card that is behind two connection interfaces with an insane amount of data would ruin it. Even running bench ultilities on an SSD can lead to problems. However this utility was remarkably accurate in gauging my hard drives read/write speeds, even my SSD 3-way RAID 1 setup. Most people will run this app on their Macbooks or iMacs, but the numbers to the hard drives included with those computers is already published and freely available. This app is geared more for Mac Pros or, dare I say it here, H@ckint0sh. However, if you own a Blackmagic Design Cinema Camera, and want to know if that SSD you just bought will keep up with the camera's RAW recording format, this app will give you a good idea. It also lets you save a screen shot to show off to your friends. Anyway great app and don't be swayed by the many computer illiterate folks, they write comments about things they don't really know much about.
I see it now has Retina support.
Very useful when setting up equipment to be sure it's dialed in.
Formating a drive correctly for the controller resulted in better than spec throughput.
A few minutes work and a machine is discernably faster and saves money just through productivity.
Definitely a useful tool.
Great for going through a stack of flash memory cards (SD's) and seeing which are worth using.
I think the UI could be more meaningful, but I appreciate the condensed format.
The "speedo" dials aren't all that useful (a scrolling plot would be more useful.)
Maybe a plot of high/low and average as three scrolling line plots.
Some diagnostics to ferret out causes of bottlenecks would be great.
I'll give it 5 out of 5 stars because it does 100% of what it promises and then some, plus I've seen it used extensively with credible results.
I'd score it as 90% since there's room for improvement in the UI and the report output (scrolling line plot instead of "speedo" f'risntance.)
I don’t like this.
Here is why I don’t like it.
1. There is no way to configure the test. It will test every single video/file type. Suggestion to developer: Please add option for just a simple test.
2. There is no way to stop it. I guess I can force quit the app but it’s reading and writing files and I don’t want it to screw anything up. Suggestion to developer: please add a stop button.
3. You can’t minimize or resize the app. It only has a close button.
4. It seems to be randomly putting check marks in the boxes then taking them away. Suggestion to developer: better feedback to the user would be much appreciated :)
Oh wait. I just figured out that if you click the “Start” button once it is running, that will STOP the test. Not sure exactly what the results are though because there are numbers all over the place.