Patent ID: 8090881

Claim:
A method for monitoring a storage infrastructure with a plurality of storage devices and at least one interface device interfacing with the plurality of storage devices, comprising: comparing a first threshold value with a current count of physical layer (PHY) state change notification for a PHY coupled to a storage device; wherein the first threshold value monitors a rate of PHY state change notifications as a potential error indicator to avoid loss of service resulting from a disruptive PHY; disabling the PHY when the current count of PHY state change notification reaches the first threshold value; comparing a second threshold value with the current count of PHY state change notification if the current count has not reached the first threshold value; and disabling the PHY when the current count of PHY state change notification reaches the second threshold value; wherein the second threshold value is used for disabling a disruptive PHY transmitting PHY state change notifications that degrades processing of input/output operations.