The Seagate SkyHawk 6TB 3.5" Surveillance Hard Drive SATA ST6000VX74.,0023 is a high-quality internal desktop drive designed for surveillance systems. With a storage capacity of 6TB and a cache size of 256MB, this HDD is perfect for storing a large amount of video footage. The SATA interface ensures fast data transfer, while the 3.5-inch form factor makes it easy to install in a desktop computer. The SkyHawk product line from Seagate is specifically designed for surveillance systems, making it a reliable choice for storing and accessing security footage.