Top features:- Premium reliability with exclusive firmware updates- Lower power consumption utilising Intelliseek technology- Optimised performance for up to 32 HD camerasThis WD Purple Internal Hard Drive is built for 24/7, always-on, high-definition surveillance security systems that use up to eight hard drives and up to 32 cameras.Premium reliability WD Purple offers exclusive AllFrame technology that brings you premium reliability and peace-of-mind when installing your home or small-to-medium business security system.Exclusive firmware upgrades work with ATA streaming to reduce error pixilation and video interruptions that occur when desktop hard drives are incorrectly used as storage in security systems. So you can enjoy the peace-of-mind you can only get from a surveillance-class hard drive. Lower power consumption Low power consumption is crucial in high-temperature always-on surveillance environments. With exclusive IntelliSeek technology, the WD Hard Drive calculates the optimum seek speeds which lowers power consumption, noise and vibration that can damage and cause desktop drives to wear out more quickly.When you invest in a premium surveillance-class drive like this one, you worry less while enjoying the benefits over a longer period of time. Optimised performance This WD Internal Hard Drive is optimized to support up to an impressive 32 high-definition surveillance cameras, giving you the flexibility to upgrade and expand your security system in the future, if you so wish. The drive has been put through around 600,000 hours of testing, to ensure its reliability and consistency.