Designed for your NAS drive, the WD 3.5" Red Internal Network Hard Drive expands the capacity of your network hard drive. This drive is compatible with 24x 7 NAS systems with up to five bays. NAS drive Optimised for use with NAS systems with up to five drive bays, the WD drive is designed & tested for these environments. It can meet the demanding requirements of your home or small business & offers 1 TB of storage space. Dual-plane balance control technology ensures that the drive is balanced, helping to reduce vibration & noise, & keep the drive running at its optimum. The 3D Active Balance Plus technology further helps to improve drive performance & reliability. It is simple to install, so it will be ready to use in no time. Efficiency & reliability This drive is designed to run efficiently, which means you won't need to worry about your carbon footprint or your energy bills. The low power consumption & low operating temperature make it robust & affordable. This drive also features exclusive NASWare technology. This advanced firmware helps it to integrate seamlessly in your system & protect your data. With a three-year guarantee for added peace of mind, it is simple to upgrade your network hard drive with the Western Digital 3.5" Red Internal Network Hard Drive.