This read-only Counter reports the total number of read commands sent to a logical drive that had to be corrected by fault tolerance, reset each time the device driver is reloaded. A rising count here indicates the underlying array is silently recovering from read errors, which can be an early warning of a failing physical drive. For example, an admin who notices this counter climbing steadily on one logical drive schedules a proactive check of its physical drives before an uncorrectable failure occurs.