A company implemented Automatic Load Balancing (ALB). When the controller workloads are monitored, it becomes obvious that there is an imbalance and that ALB is not working correctly.
Correct Answer:
C, D
Understand ALB Requirements: Automatic Load Balancing (ALB) in NetApp E-Series systems requires compatible host multipath drivers and host types.
Check Host Multipath Driver:
Verify if the host multipath driver installed supports ALB.
Incompatibility with the multipath driver can prevent ALB from functioning correctly, causing imbalance.
Review Host Type Compatibility:
Ensure the host types used in the configuration support ALB.
Certain host types might not be compatible, resulting in ALB malfunction.
Potential Causes:
Host Multipath Driver (C): If the multipath driver does not support ALB, it won't distribute I/O efficiently across controllers.
Host Type (D): Incompatible host types can lead to issues with ALB implementation, causing imbalances.
Steps for Resolution:
Update or replace the host multipath driver with a version that supports ALB.
Reconfigure or update the host types to ensure compatibility with ALB.
