SSD unusual wear

[ep0x73]

basically I have two 860's in raid for a few years

channel zero is down to 3% with almost 50K
channel one is at 48%, same hours

raid 1 they should have the same writes thus the same wear

something is goofy

SSD's are cheap so replacing it not an issue, just curious why this would happen

I already have a new 870 to replace the "worn out" one

 

[pioruns]

basically I have two 860's in raid for a few years

channel zero is down to 3% with almost 50K
channel one is at 48%, same hours

raid 1 they should have the same writes thus the same wear

something is goofy

SSD's are cheap so replacing it not an issue, just curious why this would happen

I already have a new 870 to replace the "worn out" one

Please provide full logs from smartctl (smartmontools package).
By the way you don't need to replace SSD with 48% health rate.