After a controller upgrade or any maintenance that involves path failovers, it is critical to verify that the host multipathing software has restored connectivity to all paths and that I/O is being distributed correctly. The specific command to validate this in Purity is purehost monitor --balance .
purehost monitor --balance : This command provides a real-time view of I/O statistics per initiator (host path). It highlights imbalances where one path might be taking zero traffic while others are overloaded, which typically indicates a pathing configuration issue, a bad cable, or a host that has not correctly rediscovered the path after the controller reboot.
purehost list simply displays configured hosts, not live performance data.
pureport list displays the status of array ports but does not show the per-host I/O distribution required to verify "balance."
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