Data Path configuration

Using Fiber Channel (FC), each FlashSystem node should have at least one WWPN port configured. If the flashsystem_multipath_enabled flag is set to True in the Cinder configuration file, the driver uses all available WWPNs to attach the volume to the instance (details about the configuration flags appear in section "Enable IBM FlashSystem FC driver"). If the flag is not set, the driver uses the WWPN associated with the volume's preferred node (if available), otherwise it uses the first available WWPN of the system. The driver obtains the WWPNs directly from the storage system. You do not need to provide these WWPNs to the driver.

	Note
	Using FC, ensure that the block storage hosts have FC connectivity to the FlashSystem.