With capacities ranging from 2TB to 6TB, WD Red® HDDs offer customers cost effective storage for personal and home NAS systems with up to 8 bays. This 3TB drive, model WD30EFAX, is designed for NAS environments. (Refurbished) There’s a WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 14TB, WD Red drives are designed to handle the demands of your NAS system.