Hi all, I'm hoping someone can help me. I've put together a pc with an ssd main drive running windows 8.1 and then two 2tb hdd that I want to use for storage, the plan being to have then mirrored. I've seen online tutorials and once in the storage section you are supposed to be able to right click on the drive and then select "add mirror" for some reason i do not have this function, is there a reason for this? I'd be grateful for any help as I'm not particularly computer savvy, many thanks in advance.