If your Fusion Drive’s SSD appears to be failing, ensure you have a complete backup of your Mac before you do anything else. IDGĭriveDx’s diagnostic shows a very not good situation. For comparison, I have a 2017 iMac with a Fusion Drive (a 28GB SSD and 1TB hard drive), and DriveDx reports it’s only consumed about 10 percent of its estimated lifetime of use after two years of daily use.
He has a 2015 iMac and is a heavy user of image-editing software, and the better diagnostic packages agreed that his SSD had already worn to near-failure status after just four years. Fusion drives are a great and less costly alternative in comparison to fully SSD in pricing. SSD technology does not have moving parts however as with all electronics it will eventually fail the question is when. Then use it as your boot drive with your apps, and use the SATA drive as your data drive. That 128GB of SSD seems pretty good compared to the 1TB fusion drive that only has 32GB SSD.
#Fusion drive compared to ssd upgrade
Its best to break the fusion drive set and use the SATA SSD alone, Or if you can upgrade the PCIe SSD to 512 GB or better. My colleague John recently wrote in and eventually ran four different disk diagnostics, because not all of them agreed initially. Sadly, A dual SSD Fusion Drive is not really better than a HDD & SSD setup. These reports can provide detail about the current wear state of your Fusion Drive SSD (or a regular full-disk one). This category of software checks your drives on a schedule and alerts you the first time an error is noticed or a problem rises above a threshold. I recently reviewed DriveDx, but there are several other apps available, too. That’s why I recommend installing some form of drive-health monitoring software if you use a Fusion Drive.
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