WD Purple 1TB vertical recording technology mechanical hard drive designed specifically for surveillance systems and office environments, with excellent stability and reliability. Supports continuous 7×24-hour operation. Uses advanced vertical recording technology to improve data storage density and read/write efficiency. Comes with a five-year warranty for peace of mind. Currently, Tmall is running a “Billion Subsidies” promotion: the original price is 363 RMB. After applying a 30 RMB coupon, you pay only 333 RMB. Great value for money—recommended as the first choice for office use. If you like it, you can buy it.