Western Digital 2TB SATA Hard Disk Drive

The 2TB Purple 3.5″ Surveillance Internal Retail Hard Drive (WD20PURX) from
Western Digital is a 3.5″ SATA drive with a data transfer rate of 6 Gb/s that is
designed to withstand the stresses placed on it in a 24/7 surveillance system.
With support for up to 32 high-definition surveillance cameras, this 2TB hard
drive can hold a large amount of data and gives you the ability to easily
upgrade and expand your security system.