Mirroring One Drive to Three Other Drives

Hello, I have little to know knowledge on hard drives/RAID so ignore my ignorance. I have a WD PR4100 and I would like to mirror one of the four hard drives onto the other three. So essentially, I want one hard drive that is replicated three times. Through RAID, I am not figuring out how to do this. Any help would be appreciated. Thanks.

Hi @jaked777,

Please refer to the article How to Change the RAID Mode on a RAID Enabled My Cloud Device: