Making sense of the SMART indicators for NVMe SSDs, including all recent models fitted by Apple to Macs.
wear levelling
The life of an SSD should be more predictable than a hard disk. All you need is its TBW, and the total amount of data written to it so far.
With narrowing of the cost difference between Fusion Drives and full-size SSDs, it’s worth considering likely differences in working life.
Two free tools to check how long your SSD, including those in Fusion Drives, is likely to last.
How long will the SSD in your Mac last before it fails? Some seem to be going to an early grave. Is yours?
The Eclectic Light Company 