Process: nvraidservice.exe (NVIDIA RAID Service English language)
from 
Stardock Forums
Stardock Forums
nvraidservice.exe - General Information
Name:
nvraidservice.exe (NVIDIA RAID Service English language)
Publisher
NVIDIA Corporation
Product:
NVIDIA® NVRAID
Default location:
%windir%\system32\nvraidservice.exe
nvraidservice.exe - Description and Recommendation
nvraidservice.exe is a process belonging to nVidia
NVRaid. It is a hard disk utility required if you are using a RAID
system. This program is important for the stable and secure running of
your computer and should not be terminated. Nvidia Raid storage drivers Required for running Raid 0 Raid 1 configurations on Nforce boards
nvraidservice.exe - Uninstall Techniques
You should not either uninstall or disable this option as the drivers will still load but you will loose documentation on startup configuration for the raid service itself