The increasing demand for HD content for media consumption and rich formats such as HD DVD and Blu-Ray drives the demand for high capacity disk drives solutions in the end-user market.
Perhaps the biggest gain may be in dual storage computers where a flash memory device is used for storing operating systems, software and frequently accessed content (and maybe even for write caching) while a hard disk drive provides much less expensive mass storage of user data.
The magnetic disk backs up all files residing in the NAND, protecting the user from inevitable NAND wear and preserving it for the more hot data handling.
The flash memory in the Fusion Drive moves data and applications frequently accessed by the user to the flash memory and move less frequently used data to the hard disk drive as the flash memory becomes full.
Plus, the Cloud Storage 4000 grows with a user's storage requirement, allowing users to start off with one SATA hard disk with the ability to add up to four drives (up to 16TB of storage) as needed.