WD 4TB Sharespace support Seagate 2TB HDD?

Hi Cyberblitx , My Existing 4x1TB RAID 5 is full now and I am planning to keep these HDDs in offsite. If I configure a new RAID 5 with 4x2TBs new HDD drive in WD Sharespace, and after can I access data from my old 4x1TB HDD with the same WD sharespace ? Thanks