The Western Digital RED PLUS NAS Storage drive is designed specifically for NAS systems. With 4TB capacity, 5400RPM spindle speed, and a SATA 6Gb/s interface, it offers reliable performance for 24/7 operations. Featuring 128MB cache, this 3.5-inch hard drive ensures efficient data transfer and storage, making it ideal for small office/home office (SOHO) and small business NAS environments.