Grand mirror will not power on

I have just set up my G RAID MIRROR. it lasted 3 hours then powered off.
It will no not power on. I have tried the fix form the website , but after initial powering up it will not power on for use .
Any suggestions.
Many thanks in advance of your replies.

Hi @Kara1404
Have you opened a Support Case? If not opened, for more information, please contact the SD Technical Support team for best assistance and troubleshooting: