Odyssey X86J4105 3 HDD power supply

I want to build a home NAS with 3 HDDs with Odyssey X86J4105. I am considering replacing the provided 12V 2A power supply with 12V 4A or 5A one to power the HDDs. I want to know if the board and its on-board SATA power port can handle this much power. If they can’t, is there some external SATA power supply you recommend?