SSDs might go to read only mode when they have block exhaustion, but my experience in practice is that they simply stop functioning entirely when they fail, whe

SSDs might go to read only mode when they have block exhaustion, but my experience in practice is that they simply stop functioning entirely when they fail, whether the endurance is still at 100%, 80% or 5%. You could put the NAND on a different controller, but that's a very involved, difficult process, and even that isn't guaranteed to do anything. Their unreliability has made me far more committed to ensuring that anything of value is backed up incrementally 24/7.