WD 4TB Sharespace support Seagate 2TB HDD?

Hi Cyberblitx, Very thanks for your replay, if I configure a new RAID 5 with 4x2TB WD Cavier Green disk , in later can I access data with my old 4x1TB disk in same WD share space system ? ( I transfer 4x1TB drives to an another WD share space same system , that time I can’t access the data from new WD share space) I would Like to configure new RAID 5 with 4x2TB disks and I want to save existing RAID 5 - 4x1TB disk in offsite for later data access. Is it possible ? Thanks in advance