I've got a single dual-port Q-Logic HBA in the blades, no SAS and I'm using the built in networking.
I was booting off single CF cards but on Friday I went and moved two of the existing CF cards into the spare slots on blades 1 & 2 and added 2 x new CF cards to blades 3 & 4.
I also added USB sticks to the front USB ports on each of the blades.
Interestingly, when I had a single CF card I had the CF mirror option in the BIOS, now I have two CF cards in that option has gone, just doesn't appear anymore.
I've installed to the USB and I *think* I'm still getting the same issue.
I'm using the BIOS to boot with all default options (factory default) bar enabling processor virtualisation.
I tried swapping to UEFI and re-installing but that made no difference.
I'm on BIOS 6.3.0, iDRAC 3.5.0, CPLD 1.0.2, LifeCycle 1.6.0.73, CMC 4.31.