Can anyone tell me exactly what the "Hybrid Hard Disk Support" in the UEFI does? Should I enable it if I use a SSD to cache the array running under Intel's RST?

There's doesn't seem to be any information about this that I can find, and the manual/UEFI just says "enables you to enable or disable the hybrid hard disk support". Do they mean special support for true hybrid drives like the Seagate Momentus, or does it mean when you use a SSD and hard drive together? Does that include or exclude drives running under RSR rather than without RST?

Thanks for any info.