Host device with multi-path layer implementing automatic standby setting for active-active configuration

摘要

A first host device in an illustrative embodiment comprises a multi-path input-output (MPIO) driver configured to separate paths from the first host device to first and second storage systems into a first set of paths to the first storage system and a second set of paths to the second storage system, and to monitor performance of at least subsets of the first and second sets of paths. Responsive to detection of a performance deviation between the first and second sets of paths that exceeds a specified threshold, the MPIO driver automatically places the paths of the set exhibiting lower performance in a standby mode of operation and the paths of the other set in an active mode of operation. Absent any such performance deviation, the MPIO driver automatically places the paths of one of the sets in the standby mode of operation and the paths of the other one of the sets in the active mode of operation.