Western Digital has added 2.5 TB and 3 TB versions to its family of WD AV-GP SATA hard drives. The hard drives offer low power consumption and high capacity for storage-intensive AV applications such as digital video recorders, video surveillance, single-drive media servers and external multimedia storage. The family of drives delivers power-saving WD GreenPower Technology. The drives are field tested to have a 1.0 million hour MTBF rating.