Patent ID: 7917665
Filing Date: 2011-03-29
Classification: G06F

Abstract:
1. 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: assigning a first threshold value for monitoring a rate of physical layer (“PHY”) state change notifications from a PHY coupled to a storage device via a link as a potential error indicator, where the PHY interfaces with the interface device; assigning a second threshold value for monitoring the rate of PHY state change notifications as a potential error indicator; maintaining a current count of PHY state change notifications; comparing the first threshold value with the current count of PHY state change notification; disabling the PHY when the rate of PHY state change notifications equals or exceeds the first threshold value; comparing the second threshold value with a current count of PHY state change notification; and disabling the PHY if the rate of PHY state change notifications equals or exceeds the second threshold value; wherein the first threshold value is used for monitoring the rate of PHY state change notifications within the storage infrastructure to avoid loss of service resulting from a disruptive PHY; and the second threshold value is used for disabling a disruptive PHY transmitting PHY state change notifications that degrades processing of input/output operations, instead of resulting in loss of service.