In contrast, the ST1000VX005-2EZ102 is built for:

Insert the drive into an available 3.5-inch bay in your NVR, DVR, or PC case.

At its core, the is a 3.5-inch internal hard drive with a capacity of 1TB. However, dismissing it as a standard 1TB drive would be a mistake. The "VX" in the model string is the key differentiator—it stands for Video recorder (X-series), signaling that this is a Surveillance-Class drive.