ZimMarcel7 years ago000Can I use a 3tb in the WD Mycloud Nas together with a 4tb or must both hard drives have the same storage capacity?Show in original language (German)Spacerat7 years ago000Ideally, you should take 2 identical disks. So not only the same size, but also the same type/model, because of caches, operating modes etc. Mixing 3 and 4 TB is rather stupid, e.g. with a RAID 1 you then only have 3 TB.Show in original language (German)Comment