Hard Drive - 3,5", SATA III, 64MB cache, 5400RPM, For computers, Data storage and Internal Western Digital is a solid 3.5" hard drive with a capacity of 1TB, purpose-built to balance performance and reliability in NAS and RAID environments.Sorry, you are trying to display a video that is not supported by your device.WD Red NAS hard drivesnow with greater capacity.This photo is disabled from the colorbox and will not be displayed in it.WD Red1 000 GBAward-winning Red Series Developed exclusively for NAS systems.The WD Red is the world's first model to be developed exclusively for NAS systems. The unit is tested to be usable in 24x7 continuous operation at home or small business NAS.This photo is disabled from the colorbox and will not be displayed in it.Built for NAS compatibilityThis photo is disabled from the colorbox and will not be displayed in it.Advanced optimisationNASware 3.0.NASware 3.0 technology is the result of WD's efforts to provide the best NAS....