Seagate IronWolf drives are purpose-built for your NAS system; built to be always on and accessible. Durable and reliable, you can trust your data to be stored safely on this drive. When the time comes, you can easily scale up your NAS with multiple drives. The ST1000VN002 hard drive from Seagate features 1TB of storage size in a 3.5" form factor. This drive connects to your system via the SATA 6 Gb/s interface so make sure you have an available port on your compatible motherboard. Advanced features of this HDD include a 64MB cache/buffer and 5900 rotational spin rate.