Handling Latent Sector Errors
Let's see how latent sector errors (LSEs) in a disk are handled.
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Given the two new modes of partial disk failure we discussed in the last lesson, we should now try to see what we can do about them. Let’s first tackle the easier of the two, namely latent sector errors.
CRUX: HOW TO HANDLE LATENT SECTOR ERRORS
How should a storage system handle latent sector errors? How much extra machinery is needed to handle this form of partial failure?
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As it turns out, latent sector errors are rather straightforward to handle, as they are (by definition) easily detected. When a storage system tries to access a block, and the disk returns an ...