<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body><div style="font-family:Helvetica,Arial;font-size:13px"><br></div><div class="gmail_signature">In most cases over the years when I’ve had an HDD fail, there were early signs - often noises that weren’t normal coming from the drive. The noise usually doesn’t sound catastrophic, but rather the heads can be heard moving around more than normal, or maybe the heads are seeking, briefly parking, and then seeking (that’s a fairly obvious sound). The problems might show up in the OS as an occasional I/O error, or a corrupted file, but I can’t recall ever having any OS warn me specifically that a drive was failing. Until, of course, the drive dies completely and becomes unusable to the OS.</div><div class="gmail_signature"><br></div><div class="gmail_signature">I have a HDD that’s currently failing. It’s been making more noise than normal for the last few days. Last night I ran smartctl - mostly to figure out which of the two HDDs might be a problem - and sure enough it found some issues with one of the drives. Easy enough, just replace the drive and move on. SMART doesn’t catch every drive I’ve had fail, but this time it did.</div><div class="gmail_signature"><br></div><div class="gmail_signature">But it got me thinking about SSDs. There are no mechanical parts, so there’s nothing to hear. How do you know if an SSD is on the way out, other than running smartctl all the time and looking at the results? Do desktop OSs like Win/Mac/Linux have built-in facilities (I’m not aware of any?) for notifying the user “hey, this drive is reporting problems. It’s likely a sign of impending failure”? Would that even work on an SSD?</div><div class="gmail_signature"><br></div><div class="gmail_signature">I know both kinds of drives can remap bad sectors, and that they are designed with extra “space” to do just that. In my experience with failing HDDs though, one bad sector tends to warn of, or worse cascade into, more bad sectors rather quickly. I’m curious about ways we would know an SSD is going to kick it?</div></body></html>