Studio edition replacement please

Hi everyone. My 1tb studio edition is playing up and I have repaired it via disc utility on my mac but it’s telling me to format it after saving everything. So I need to buy another drive to transfere everything across. Can anyone give me an idea what one would be easiest to do this with and is it possible just to plug the new drive into the spare socket on the old drive and transfere everything across. it’s only photographs and music but don’t want to loose any photos of our little girl.



What spare socket?

 if you have the dual unit then replacing one of the drive will rebuild the raid

if you have the single drive unit, you will need to get the data recover