Thank you for contacting the Intel community.
When you said a hardware reset you mean that you reset the RAID 1 to non-RAID from the Crtl-I BIOS?
When you have the RAID 1 and RAID 0 set up, did you try installing to the latest BIOS version on your system?
What is your system model?
Are your drivers up to date, chipset driver graphics driver etc?
Please let me know.
No, hardware reset mean reset of PC with pressing "reset" or holding "power on" button.
question is : What should I expect in case of power off a PC with configured RAID1 ( on RST P67 and ets. chipsets) without usual OS shutdown. Would RAID1 be in inconsistent state?
Thank you for clarifying on that Igor.Alod.
In this case, if you reset the PC or if you did a hard reset of your system your RAID 1 still should work as normal, however, the inconsistent that you have with the RAID 1 may be that is degraded when you hard reset the system boot up too fast and the hard drive does not have enough time to start spinning up. You can try to delay the boot time in the BIOS or try with a BIOS update on your system if there is a new version available from your computer manufacturer.
I can see that this issue you have is similar to the one reported here:
Post 5 shows a solution for it.
Please let me know how it goes.