All Disks Marked as "Non-Raid Disk"

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Ivannovish

Reputable
Feb 25, 2014
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I have done some testing of my own and I have found a serious failing of the Intel RST controller.

First I have tested each disk to make sure they were not faulty.


When the SATA controller is placed from RAID - AHCI and the PC reboots then placed back to AHCI all RAID Configuration is lost...


Steps to recreate :

Create RAID Volume

Reboot and change SATA from RAID (Intel RST Premium) to AHCI

Reboot and attempt to load windows

Reboot and change SATA from AHCI to RAID (Intel RST Premium)

All Disks are now no longer in a RAID Array...


I'm now at a loss of what to do as I can not rely on this RAID controller at all, as if the BIOS is to reset to defaults I now lose all of my data....

Is this normal behavior with this motherboards when changing from RAID to AHCI?

Mobo: Gigabyte a Z170X-G3.


Regards,
 
Solution
M
I've done this inadvertently when upgrading a BIOS before, which had its SATA set to RAID mode. I upgraded the BIOS, booted in to the BIOS but forgot to set the SATA mode back to RAID from AHCI and booted in to Windows. One of the three disks you could tell didn't hold the RAID data as it was sitting there as a 4TB disk while the other two showed as 12TB (it was a RAID-0) indicating they still had the RAID data on them. After flipping the SATA back to RAID the array was gone and had to be rebuilt. No biggie as I had a backup of the data.

If you flip the SATA type from RAID to AHCI and boot to Windows, windows is gonna try to control those disks that were in the RAID array. Many times you'll end up with the situation above.

Point...
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marko55

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Nov 29, 2015
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I've done this inadvertently when upgrading a BIOS before, which had its SATA set to RAID mode. I upgraded the BIOS, booted in to the BIOS but forgot to set the SATA mode back to RAID from AHCI and booted in to Windows. One of the three disks you could tell didn't hold the RAID data as it was sitting there as a 4TB disk while the other two showed as 12TB (it was a RAID-0) indicating they still had the RAID data on them. After flipping the SATA back to RAID the array was gone and had to be rebuilt. No biggie as I had a backup of the data.

If you flip the SATA type from RAID to AHCI and boot to Windows, windows is gonna try to control those disks that were in the RAID array. Many times you'll end up with the situation above.

Point is, its reliable as long as you don't goof it up (like I did) and cover yourself by having a backup of your data (like I also did). Alternatively, buy a real RAID card and this problem goes out the window. You can physically move that RAID array (along with the RAID card) to a completely different system and it'll come right over no problem.
 
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