Patent ID: 8214551

Claim:
A method for addressing degraded I/O performance between a host system and a storage controller, the method comprising: monitoring I/O performance between a plurality of host systems and a storage controller; assigning, on a per host basis, an acceptable I/O performance level for each host system that communicates with the storage controller; detecting when the I/O performance of a first host system of the plurality of host systems falls below its acceptable I/O performance level, thereby resulting in degraded I/O performance for the first host system; analyzing historical configuration records stored in the storage controller to identify a second host system that initiated configuration changes that caused the degraded I/O performance of the first host system; notifying the first host system that the second host system is the cause of the degraded I/O performance; and notifying the second host system that it is the cause of the degraded I/O performance.