Installation on HP DL380 G10 Server

HI All

iam new to this forum

I have installed Truenas on DL380 with 64GB RAM and 8 x 1.2SAS Drives. its has installed

but coming and stopping at Console setup , when i try to configure the Network card it dosent allow me to give it an IP address.

i want to Use 4 drives for storage and 4 drives as mirror . how to do this ?