soft. ware.
basically hacker news went down yesterday and in this screenshot someone chimes in talking about it saying that they had a batch of SSDs manufactured by SanDisk all get bricked after exactly 40,000 hours (4.5 years) uptime because it overflowed an internal counter and corrupted the SSD's internal state.
someone from hackernews replies and says that the SSDs HN was hosted on were in fact SanDisk Optimus Lightning IIs and almost exactly 4.5 years old.
never trust a firmware