FreeNAS-11.3-U5
Dell R410, 64GB ECC RAM, LSI 9207-4i4e IT mode (20.00.07.00), X540 10gigE
Dell Xyratex HB-1235 dual controller disk shelf
Boot pool - 2 x SSD, KingSpec 64gig (in server)
Data pool - three vdevs each of 3x4TB in RAIDZ1 (on shelf), plus two spares (in server)