VMware Adaptive Storage Load Balancing

Adaptive PSP  is  PSP plug-in that VMware  developed to adaptively switch load-balancing strategies based on system load.

Moving forward, VMware are working to further enhance the adaptive logic by introducing a path scoring attribute that ranks different paths based on I/O latency, bandwidth, and other factors.

The score is used to decide whether a specific path should be used for different system I/O load conditions. Further, the logic decides  the percentage of I/O requests that should be dispatched to a certain path, and could also combine the path score with I/O priorities, by introducing priority queuing within PSA.


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