I would like to provide an example of this effect the way I have for the HDD below but sadly it seems most people only test the first ~10% of their SSDs or so, and as a result any images you see of this test will show no degradation in performance. This shouldn't really be noticeable until you get it ~70% full or more. Read speeds however shouldn't be noticeably impacted. This of course is slower, and will wear the drive out faster. This is because they aim to write new data to unused space whenever possible, but as they fill and this becomes impossible, they have to go back to space that is already used and add more to it, which involves reading from it, adding the new data, then writing that back to the SSD. Power and Performance.SSDs will wear faster and lose write speed as they fill up. Select the hard drive and change the settings for APM (by APM section between Min. Change the spin feature by going to function > advance feature > AAM/APM control. You can download the standard edition from their website. However there is also a program which allow you to control this, named CrystalDiskInfo. You can prevent this by creating a task to allow it spinning and run it in the background. You want to prevent the HDD from spinning up and down to have the best performance and to keep it in best shape. Prevent hard drive from spinning up and down The generated noise by spinning up will also occur less. Also, accessing your hard drive will take much longer if the hard drive have to spin up every time when you want to access a file. The optimum is to keep the hard drive spinning when it is operating. Therefore we normally prefer not excessive spin ups or spin downs with a hard drive. However spin up and spin down of a traditional hard drive will, in general, decrease its life. Every time you’ll access the hard drive it will spin up again. Due to energy saving settings many hard drives will spin down when they are not in use or are inactive.

Crystaldiskinfo apm sleep