Product UPC: 079570915342 Ideal for small business servers or home video and central storage, the Seagate AS HDDs are built and tested to provide industry leading performance for small 1 to 5 bay NAS systems. Expect always on,24 7 reliability and the NASWorks technology features that simplify your installation, customize error recovery controls, and ne tune power management and vibration tolerance. Available in capacities up to 4TB.