help with SSD for OS + RAID 1 data setup- best option?


Junior Member
Jun 12, 2011
Hi there!

I'm trying to create a setup with my boot drive for the OS on my SSD (Corsair Force F120GB2) which is on the SATA 1 port, and have my 2 x WDC Black 1 TB drives set to RAID 1, which are on sata 2 and 3. Currently, the controller is set to AHCI on SATA ports 1-4, and 5-6 are IDE, which is where the SATA DVD optical drive is. I have already installed Windows 7 on the SSD, and it is currently the boot/OS drive.

From what I've read in the forums here ( Yes, I read the awesome sticky thread...) and others, RAID 1 can be achieved by re-installing Windows 7, then switching the controller to RAID in the bios. I have also read that this will hinder performance of the SSD drive by 15% +. Is there a better recommendation for this setup? Is it true that it's either AHCI or RAID, and no combination of the two? Is there a different option someone can recommend? I wanted to do the RAID 1 approach to have more secured data while still having the performance of the SSD for OS and a few programs, but if it will indeed affect performance I am open to suggestions.

Specs for the pc are close to Anand's recommendation in the Holiday Build Guide for 2010:
Motherboard- ASUS M4A89GTD PRO/USB3 | CPU-AMD PHENOM II X6 1075T 3.0G | SSD- 120GB CORSAIR F120GB2 | HDD 2 x 1TB WD Caviar Black | VGA- ASUS EAH6850 | Mem- GSkill Ripjaws 8GB

thanks in advance!


Golden Member
Nov 2, 2006
I had the same question just recently. RAID has AHCI built into it. Currently, I have a similar setup SSD as OS drive and my WD Blacks are in RAID 0. My SATA ports are all set to RAID.

There are a few websites that have some things you can check to verify everything is setup correctly after you get Windows installed. I think Tom's Hardware has a recent article about it. Also, I think it's covered in a thread around here too.