Problem with creating raid 1 and 5 on same machine - EMC r450

Hello,

recently i purchase DELL EMC r450 poweredge with PERC H345 Front (Embedded) controller.

I have 5 ssd disks:
and i wanna put into raid:
raid 1 - 2x 480gb
raid 5  -3x 960gb

then when i try to create raid 5 i don't have options

disks are recognized

i created successfully raid 1, but when i try to create raid 5 i select 3 disk and i don't have options for raid 5 

i try to create by using iDRAC but same problem.
Do i need to turn on some specific options or?


Thanks.