Apple Bobber wrote:
Also, can some SMART errors be fixed by formatting the disk?
No. Besides using Disk Utility to "erase" the SSD does not overwrite the entire drive as it only rewrites the partition table and creates two partitions with a couple hidden default files.
With an SSD it is sometimes possible to use the SSD's built-in hardware secure erase feature to reset the SSD to factory defaults which can sometimes fix a misbehaving SSD. However, not all SSDs have a built-in hardware secure erase feature.
Unfortunately there is nothing you can do about the reporting of the SMART Failing status with your SSD since even using the SSD's built-in hardware secure erase feature would not help here. Plus I'm not sure the SSD in your MBPro 2017 laptop even has the hardware secure erase feature built-in.
The health report for your SSD shows the SSD is well used and has actually written more data than it was designed to write. Normally we have no clue how much data an Apple SSD is meant to write for its lifetime as this value is affected by the drive size and type of NAND used, but to me it seems like this SSD has most likely written about 45% more data than it was designed to write (Attribute# 5 "Life Percentage Used"). While it does not mean the SSD cannot be used, it does mean that if you are having any problems with the SSD, then most likely it is because the SSD is worn out. I've seen reports where people have used their SSDs way beyond manufacturer expectations. However, since the SSD manufacturers don't provide a lot of useful health information it is hard to know how long the SSD will last although I would expect to see the "Available Spares" and "Media and Data Integrity Errors" to change before the SSD actually fails, but I don't believe those two attributes are enough to alert you to a pending failure.
Unfortunately the drive manufacturers don't always report the health information in expected ways so interpreting the health report is sometimes a very inexact science. I'm not entirely certain why the SSD is reported as failing since the health attributes should not have been triggered by how those health attributes are presented here. I'm assuming the SSD's health reporting attributes were not designed to follow standard protocol behavior and the SSD has internally set up the "Failing" flag for the SSD. I don't know why manufacturers refuse to follow standards especially for something so important and useful.
I do advise caution if you continue to use this SSD since it could fail at any time or develop performance issues. Make sure to have frequent and regular backups. This is always good advice especially with SSDs, but in your case it is essential if you value your data.
Since you have a USB-C Apple laptop you will need to have the Logic Board replaced once the SSD fails. Unfortunately at this time it appears Monterey will not install on a laptop with a third party internal SSD or if the internal SSD is reporting a SMART failure. I doubt Apple will change this behavior so if you want to install Monterey you will need to have Apple or an AASP replace the Logic Board.