Will Round Robin NMP uses all the Paths , Active Active array ??

Hi All,

  I have query regarding the RR vmware NMP , as per the vmware if the device is set to use vmware RR policy, by default it will use all the active paths after every 1000 IOPS.

  In our case, we have active-active storage array and 4 paths for each LUN. As I aware the IO's will be transferred only on Proffered Optimized paths ( only 2 Paths), when the paths goes down , based on the SCSI sense code , path will be transferred.

My query is, in case of active active array, and NMP set to Round Robin. will it use all 4 paths or only 2 paths ( Proffered Optimized ) ??

Thank you in advance.