Long story short: FreeNAS only sees 1 of 12 data drives while POST & some other OS'es see all 12.
Per forum rules, here's the hardware I have available to work with:
Server: HP DL380e G8 (12 LFF) w/ SAS Expander Backplane,
CPU: Intel Xeon E5-2440 2.4GHZ 6 core 15MB x2
RAM: 32GB DDR3 ECC...