The 400GB DB35 7200.3 3.5" Disc Drive for DVRs redefines value for high-capacity systems and delivers performance optimized for DVR storage and optimization. DynaPlay Technology from Seagate addresses many of the challenges of integrating HDDs into DVRs: power, video streaming performance, acoustics and reliability. Its DriveTrust Technology improves content security as part of a system digital rights management program. Plus, its multiple stream recording capability allows you to record up to 10 television streams at once.