Event ID - 503

Event Id503
Event SourcePercPro
DescriptionArray Disk degraded
More InformationAccording to Dell:
Cause:

A physical disk in the array is degraded. The degraded disk may have been identified by the controller or channel. Performing a consistency check can also identify a degraded disk.

Resolution:
Replace the degraded array disk. You can identify which disk is degraded by locating the disk with a red "X" in the Array Manager console's tree view. Perform a rescan after replacing the disk.
Reference Linksevent id:503 and source: PercPro

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