There is an option to configure during POST, but the stupid splash screen gets in the way. Press any key during POST and it will show the normal startup - iLO config first which you can ignore, then P410 initialisation where you can press F8 to enter ORCA, then the rest of the cards. If you've got a USB keyboard though it takes too long sometimes to see initial keystroke and it's gone past the option to enter ORCA config. I hate that splash screen.
You really shouldn't be using SATA disks in a production environment with ESX though, they don't have the performance unless you're using them for archive/backup which you're not by the sound of it.