This gauge reports the current count of correctable memory parity errors on the fabric-interconnect switch's hardware, as recorded in the currently sampled CPU-load and memory-usage statistics for the fabric-interconnect switch's onboard OS. An administrator watching for early signs of failing memory hardware on the switch supervisor tracks this CorrectableParityError figure, since correctable errors that are climbing often precede uncorrectable failures. For example, a rising CorrectableParityError trend across successive samples would prompt an operator to schedule a hardware inspection or replacement before the errors become uncorrectable.