Use the Areca 4TB Spare 3.5" Hard Drive with Tray to replace, upgrade, or add an additional storage drive to your ARC-5028T2 storage system. This drive can offer more storage space with a capacity of 4TB and faster performance with a spin speed of 7200 rpm. In addition, it is equipped with 64MB of cache memory for improving the read and write times. You can also quickly install this drive inside the Areca ARC-5028T2 storage system since it is already mounted on the tray. Furthermore, this enterprise-class drive is designed to work longer than the typical hard drive and comes with a limited 5-year warranty.