ALR0523E The Total Data Rate of controller or I/O Group Controller or I/O Group name in storage system storage system name was measured to be measured value MiB/s, which violated the defined critical-idle boundary value of boundary value MiB/s.
Explanation
Total Data Rate measures the average number of mebibytes per second transferred for controllers and I/O Groups. A threshold was defined on this metric, which causes the measured value to be compared to the defined boundaries for each set of performance statistics collected from the storage system.
This message indicates that a threshold boundary violation occurred. In this case, the specified controller or I/O Group in the storage system has a Total I/O Rate value that is less than or equal to the critical-idle boundary that was defined for the related threshold.
Action
The threshold violation might indicate an unexpected drop in the workload for this controller or I/O Group. This can happen if the application(s) using the controller or I/O Group stopped working properly.
This type of threshold boundary should only be defined if the workload for the controllers or I/O Groups in a storage system are guaranteed to always remain at a certain minimum level. Otherwise IBM Spectrum Control might recognize many violations, even though there is really no underlying problem with the applications. In these situations, consider decreasing the boundary value in the threshold definition, or disabling the boundary check by leaving the boundary value blank.