WD has confirmed to have begun sampling its next-generation 5mm hybrid drive. In addition to the thin shell, the hybrid drive packs in an MLC NAND flash storage for SSD-like speed and a conventional hard drive for huge storage.
The way it works is that the most frequently used data is preserved in the NAND flash and the less accessed data stays on the hard drive. For instance, the browser could reside on the NAND flash whereas a movie or a song will stay on the regular HDD.
WD reckons the solution is apt for ultrabook makers and will showcase it at the WD Investor Day on September 13.