Where does Raid configuration stored?

Server1:
A smart array 532 with 6 hot swap 36GB is configured with two set of raid 5 (each has 3 disks)
It is installed in a ML350 G3 with windows 2000

Server2:
A smart array 641 with no disk on it
A ML350 G4P with windows 2000

Question:
Can I move the disks from Server1 to the Server2. And expecting SA641 to detect the existing raid configuration on the disks.

Technicality:
Is the raid configuration stored in RAID CONTROLER or is stored on HARD DISKS?

PS: SA641 was used before on a Server3 to hold 3 different raids. Do I need to clear the SA641 in anyway from it’s old configuration?

Regards,