|That article really isn't surprising. The two biggest factors that slow a traditional disk is the rotational speed of the disks, and moving the heads into position. Defrag helps the latter by reducing the amount of movement the heads need to do. |
SSDs neither rotate, nor have heads to move. Defrag might help if moving the file put it in the same page as the rest of the file, but the modern OSes will align file system clusters with SSD pages. I'm not saying it's impossible to happen; disk or volume cloning software will gladly not align the clusters to the pages, but at that point defrag is a lot like putting a small band-aid on a large gash. It technically helps, but you won't see much improvement.
That entire article is as silly as an article talking about the airspeed of cars.
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