Nvidia 6100 MCP RAID or GEOM

[Iv. Karabojkov]

Hi!

I am asking for recommendation. I'd like to use two SATA disks as RAID1 
- mirror. My MB uses NVidia MCP6100 with hardware RAID.
Is it better to use this RAID or to build a new one using GEOM?
If I accidentally replace the MB will it be easy to reconfigure GEOM 
(for hardware RAID I know it is not if the chipset / SATA BIOS is not 
the same).

And one more: Is network chip Realtek RTL8201 supported on FreeBSD? I 
didn't find it in rl or re drivers, some article says it is supported by 
nve or nfe ?!?

Thanks in advance,
Ivo