Users looking for more storage will appreciate the Western Digital Red WD30EFRX hard drive for its 3 TB of space. This Western Digital 3 TB hard drive is ideal for home use or small office networks and can hold entire video and music libraries or multiple business files. This internal hard drive has a 64 MB cache. The Western Digital 3 TB hard drive has a SATA 6.0 Gbps interface with a 3.5-inch form factor. The NAS compatibility of the Western Digital Red WD30EFRX reduces many of the issues that come with many desktop drives. The internal hard drive is energy efficient and takes less power than other internal hard drives. It also has enhanced reliability. The Western Digital 3 TB hard drive runs quietly with no vibration and reads and writes fast, so users will not notice any delays. It has a read of 207 Mbps and a write of 190 Mbps for fast performance, even in a busy office. This device works as a backup for important files as well.