First time mounting netapp and not familiar with its storage concepts. We got a 12 disk fas2520 (600gb sas) with 2 controllers. We must to use it in 2 node vmware connected by iscsi. With the system setup tool I choose active/pasive so its configure 3 disk to one controller and all other in the other one, this setup makes my available 2.7 tb usable I didnt use the option active/active becvause the usable space was even lower. Please is it like is? from a 7.2 raw space i can only use 2.X.? I have read that netapp needs at least 3 disks per head but this not sounds good, as I usually works with SAN storage that can profit best the raw space no matter one or to controllers.
Im running 7-mode ontap with a switch dedicates for ISCSI traffic, is this the best approach? ISCSI is a must.