What about Hybrid Hard Disk (Hybrid) in Windows Vista?

Hybrid Hard Disk is one of the new hard disks with inner flash memory.
Because it has the capability to save data by flash memory, it can perform prompt operations (Start-Sleep-Restart) on your PC.
In addition, because of the engine action of the hard disk itself being reduced, it controls the overabundance of battery consumption and thus improves the stability of the hardware.

The Hybrid Hard Disk install the Tablet PC of Windows Vista as the object and equip parallel function of Windows Ready Drive in Windows Vista . In addition, when in sleep mode, data will be saved in the flash memory temporarily. Compared to the inactivity for saving data in hard disk up to now, it can launch on the PC more rapidly.