What multipath HA for HA pairs is
Multipath HA provides redundancy for the path from each controller to every disk shelf in the configuration. It is the preferred method for cabling a storage system. An HA pair without multipath HA has only one path from each controller to every disk, but an HA pair with multipath HA has two paths from each controller to each disk, regardless of which node owns the disk.
The following diagram shows the connections between the controllers and the disk shelves for an example HA pair using multipath HA. The redundant primary connections and the redundant standby connections are the additional connections required for multipath HA for HA pairs .