Z600 - Changing boot order on SATA0/1/2 HDDs

I have an HP Z600 running BIOS v3.54. Three HDDs total:

SATA0 and SATA1 holds HDD that I'd like to configure as RAID1. I am bringing these over from an old NAS setup, so I may need to reformat them. They have an EXT2 filesystem on them.

SATA3 holds my SSD with Windows 7 Pro.

I need to be able to boot from SATA3 and have the BIOS skip SATA0 and SATA1 for boot. However, when I start my PC, it's attempting to boot from the HDD (supposedly SATA0).

Is there a way to change the SATA order of the boot?

Thanks in advance for your help.