My understanding is that SMR drives fail because the write load is continuous for a long period of time and overwhelms the background process organizing the dat

My understanding is that SMR drives fail because the write load is continuous for a long period of time and overwhelms the background process organizing the data for efficient SMR writes. In a 2-disk mirror (RAID1) rebuild, all data from one drive has to be copied to the other drive, which seems likely to overwhelm an SMR drive. So it would seem to only work in a RAID0 array (concatenated drives - bad idea) or JBOD NAS setup.