A symbolic milestone has been reached recently by Western Digital by being the first producer to ship a 3TB internal hard drive. Its Caviar Green 3TB model packs 750GB per disk platter and is meant to be used with 64-bit platforms such as Windows 7 64-bit or OS X Snow Leopard, which can access and boot from drives over 2.19TB. The manufacturer of the drive even bundles an Advanced Host Controller Interface adapter which makes 32-bit Windows 7 and Vista access the full content of the disk.
The Green edition spins at a slower speed of 5,400RPM and addresses those users who appreciate the power saving or who need lower heat because of tight enclosures. The drive still has 64MB of cache as have the best drives from Western Digital and plugs into SATA and SATA II interfaces.
Drives are already available and the cost of the flagship 3TB is $239. A smaller version with 2.5TB is available for $189. The company did not mention when will arrive the mainstream Caviar Blue or the performance-oriented Caviar Black.