Jbod Issue

i have WDMyCloudEX4100 and installed in bay 1 SSD 960GB and the other 2 bays are WD 2TB Red edition so i am trying to format the Drives in JBOD mode but i cant see each Drive seperated so i can use internal Backup from the SSD to bay2 daily and from SSD to bay 3 Weekly is there any step i missed to create those jobs, plz assist thanx,

i am talking about the non-spanned jbod becos i need to back up the Volume_1 to Volume_2 and Volume_3 which is not available in Ex4100, so if there is anyway i can manage my Drives in this way would be thankfull.