OSIgate NO-CHIP Quad M.2 PCIeX16 Controller (no chip, pcie direct NVME)
support 1~4 set of 2T M.2 NVME, PCIe 3.0, x16

for those new server bios support PCIe x4+x4，or PCIe X16 Bifurcation

compatible with the Intel® X299, Z390, Z370 and future platforms' RAID-on-CPU function, and supports PCIe 4.0 NVMe RAID on the AMD TRX40 and X570 platforms.

TrueNAS ZFS storage pool size, 2T x 4 M.2 NVMe :

8T storage in Raid 0, striping
6T storage in Raid 5, distributed parity
4T storage in Raid 1, mirroring

TrueNAS ZFS storage pool size, 4T x 4 M.2 NVMe :

16T storage in Raid 0, striping
12T storage in Raid 5, distributed parity
8T storage in Raid 1, mirroring