Blue light blinking and fan to max speed

Hi there, I’ve a problem with my cloud mirror NAS 1st gen. Currently I’m running on a MBP OS X 10.15.1 without any trouble. Starting from last night the blue led is blinking, HD led are off and fan is running at the max speed. NAS is configured at RAID 0. I tried with a soft reset, but it seems to be freezed. Do you have any idea how to fix the problem.
Do you think it’s possible to mount the HDs in a WD My Cloud EX2 Ultra for getting access to the files? Is RAID 0 coming from My clod mirror compatible with EX2 Ultra?
I thank you in advance for your help. Greetings Fabrizio