Seatools dos and raid oddity

[Pixels]

Hi crew,
Just a curiosity I have that someone may have an answer for.
I had created a 4tb raid0 volume [2 x 2tb seagate barracuda] on a intel c600 controller, then removed them from that m/b and connected them one at a time [disconnected all other drives] to an older m/b with a ICH5 controller, booted and checked that the controller was not in raid mode and booted seatools dos to erase sector 0 only.

Then reconnected them back to the c600 controller and was surprised to see that the controller still saw both hdd's as member disks in raid config. when I was expecting them to show as non-member disks.
What have I missed?

[drc]

The raid info is not stored in the MBR

[Pixels]

Yeah sorry, knew it was gpt that I had to kill, but forgot to mention that I also wiped many lba's at the start, then discovered that the gpt is also written to the end lba's.
Diskpart is my friend

[drc]

The raid info is also not stored in the gpt data

[Pixels]

Maybe I didn't ask the right question. Diskpart achieved what I wanted