T330 only support connecting on storage controller for backplane and you can not connect both H330 and HBA330 to backplane same time. You can refer below link for details [URL] 
Hello, I have a T330 with :Poweredge T330 with 8 Hot Plug 3.5" HDD BackplanePERC H330 Integrated RAID Controller PCI.. Card2 x 2TB 7.2K RPM SATA 6Gbps 3.5in Hot-plug Hard Drive Wondering if it would be possible to add a second HBA330 card... H330 -> disk 1,2,3,4 on the backplaneHBA330 -> disk 5,6,7,8 on the backplane    H330 Hardware raid for operating systemHBA330 for ZFS pool   Thanks, Andras  
T330 with 1 x H330, 1 x HBA330 connected to 8 port backplane