Expand the storage of your appliance with an internal Seagate hard drive (HDD). There's a suitable Seagate HDD for every appliance. For example, the BarraCuda series is a basic storage for laptops and desktops, but the IronWolf and EXOS drives are specially made for NAS. When you're looking for storage or security images, choose a SkyHawk HDD. Seagate hard drives are available in 2.5-inch and 3.5-inch models.