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QUESTION: Raid 1 with 2 ambigious Sata HDD and 1 SSD for OS

I want to Run 2x Sata HDD's (Seagate Barracuda 7200's) as RAID 1 and 1x Kingston SSD for windows boot how would i go about setting this up?

I have read that it's important to setup AHCI for the ssd. I initially did an install where i just popped in everything and one of the Seagate Barracudas would not show up at all in windows / windows install would show it as offline and not able to be installed on when plugged in to the Intel sata ports. This was with the latest drivers and after installing windows with just the SSD plugged in. when plugged in via usb (with adapter) or in one of the ASMedia ports it would work.

Having said that, the information of my system is as follows:

Motherboard: ASRock z87 extreme 4 LGA 1150
SATA ports on the MB: SATA3_A0 SATA3_A1 (ASMEDIA SATA ports), SATA3_0 thru 5 (intel ports)

CPU: i5 LGA 1150

1x Kingston SSD 120GB on SATA3_0
2x Seagate Barracuda 7200 750GB on SATA3_1 and SATA3_2

So my problem is what bios settings do i need to have for initial install on the SSD to run RAID 1 (mirroring) on the other 2 drives and NOT on the SSD. In order to avoid the problem with the drive not showing up, do I have the drives plugged into the correct SATA ports? Are there any SSD settings/tweaks to avoid doing with this setup?

Thank you so much for reading and helping.
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  1. Best answer
    If you want to do RAID, you will have to set the motherboard ports to RAID mode. This will supply AHCI to a non-raided drive, so don't worry about that.

    First, install Windows with only the SSD attached to the system. This ensures that no part of your system setup gets onto the RAID, unless you actually want that recovery partition on the RAID.

    Second, it sounds to me like one of your drives is busted. Have you tried swapping ports for the two HDDs? If the deadness stays with the drive, perhaps the drive is bad. If it stays with the port, perhaps the port is bad. Or perhaps (unlikely) the drive needs to be initialize, which comes before partitioning and formatting? I think we'll have to spend some more time on this point.

    Finally, unasked for advice. Keep in mind that RAID 1 will increase your likely system availability but it is no substitute for external backups.
  2. When I restarted the installation to this setup i realized why the other drive wasn't being detected, it was still set up as RAID configuration ( why Intel kept reporting errors ), since i was a hardcase i first went back and fixed that to see how to do it / if it did it. Then I started the reinstall. Started out with RAID enabled and ssd only plugged in, installed and then hooked up the other 2 drives and set up raid on them.

    Thx for the extra bit of advice , I have a 3rd seagate Barracuda in an external case that i will be cloning on as well.

    System after installation is Seagate Barracudas in RAID 1 and SSD off the RAID, i think not remembering about these drives (its been 5+ years since i set them up for a RAID array on them ) threw me off. Thanks for your reply.
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