Western Digital today came out with a mammoth 4terabyte external hard drive for enterprise users as well as media geeks. The new My Book Studio Edition II dual-drive storage system is designed to seamlessly work with Macs and is compatible with Apple Time Machine automatic backup feature. According to WD, the new 4TB My Book Studio Edition II external storage system's dual-drive RAID 0 configuration and high-speed interfaces deliver high performance for creative professionals, workgroups, small offices and anyone looking for fast data transfer.

The system offers four interfaces: eSATA and FireWire 800 for maximum performance as well as FireWire 400 and USB 2.0 for maximum flexibility.

The WD My Book Studio Edition II with 4TB is available for $649.99.