Hi,
i have finally got it working.
Asrock C236 WSI
Xeon E3-1275 V6
32 GB ECC
Intel® X710 DUAL 10 GB SFP+
2x 2,5" Samsung 850 2 TB SSD
4x 2,5" Samsung 860 EVO 250 GB SSD
2x 20 TB Western Digital Ultrastar DC HC560
IDLE C7: OK, Mainboard cant go deeper 26,3 Watt
Parity and Full Smart Tests of all SSDs 42,2 Watt
Im Happy :-).
Without HDDs 14,7 Watt