Western Digital recently launched two new hard drives for it’s AV-GP series. The AV-GP series are WD Green Power hard drives with special firmware optimized for heavy audio/visual applications such as video streaming, surveillance systems, and HD video recorders.  The two new additions to the series come in 2.5 TB and 3 TB respectively.  Both drives are 3.5" form factor, contain 64MB of on-board cache, and utilize the SATA II 3Gb/s interface.  Designed for use in high temperature environments, the drives have a claimed 1 million hour MTBF (mean time before failure) rate and are covered by a three year warranty.  Further, the 2.5 TB and 3 TB drives use the advanced format (4K sector) partitioning, which means that these drives are not well suited as boot drives, especially in the case of many older computers.  The 2.5TB WD25EURS hard drive is available for $159.99 USD while the 3TB WD30EURS variant will cost $179.99 USD.