Thank You for your reply. My plan is to move all content from openfiler and then when I finish configuring freenas put it back. All I need is iscsi for VMWARE ESX - VM running in it. My understand is freenas comes with all drivers - right? Or I have to somehow get all of them for freeBSD. I will better start reading since I used openfiler (not configured) how to set up step by step. What I can use is network switch 10GB uplinks and X540-T2 x 4 for four hosts. The array is supermicro with LSI raid controller. Currently having openfiler with some data corrupted. Thanks for any help links or advice's.