The issue is that these systems will be running at customer sites and we need our software to be able to detect failing drives and take corrective action. It's an HA system so when a drive is deemed usable another drive will have to take over. We can detect a completely failed drive, it's just these bad sectors we need to find a way to deal with. We ultimately want to treat a drive that we detect bad sectors on the same way as a drive that fails completely. Essentially, we want to be alerted as soon as a sector goes bad, or at least within a very short period of time...
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