![]() Successful completion of writes to optimal RAID 5 volumes even when parity cannot be generated.All continuation of reconstructions and other long-running operations despite media errors.Persist reporting of unreadable sectors.Better reporting of the unreadable sector (and USM related conditions) in the Major Event Log (MEL).The five main functional improvements provided by USM are: The feature is designed to be mostly transparent to the end-user and therefore no configurable options are available and the functionality cannot be disabled. The Unreadable Sector Management (USM) feature provides a controller-based method for handling unreadable sectors that are detected during normal I/O processing, and long-running operations such as reconstructions.
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