The 16GB ssd is simply used as a cache drive to improve the performance of the hard disk drive.
It is not a hybrid drive. The ssd and the hard drive are separate drives.
All software including the OS are installed on the hard drive.
So, what exactly does it do though? If they are separate drives, how does it improve the performance of the hard disk? Will it make boot ups and wake ups faster? Or is it just for small programs to put on there?