Cloning Main to Backup Server with RAID1

Hi,

I have 2 identical servers PowerEdge R7515 with PERC H730P Mini RAID Controller. The Main Server is with a RAID1 with two SSD is configured, OS is installed.

Now I would like to clone the Main Server to the Backup Server by taking one SSD from the Main Server and put it in the Backup Server. 

But I can't find a way that the Backup Server will accept the SSD. It always saying there is a foreign configuration on the disk.

So is there a solution for this?

Thanks

Arema