Boot partition and caching partition on same SSD

I googling if this was possible and the answer is yes. I don't know specifically about Alienware laptops.

I don't have experience with SRT caching but apparently it can only be set up from inside a windows environment and it won't allow you to do this to an SSD that has the OS on it. It also won't allow you to do this to an SSD when you have the OS installed on another SSD--I guess because this won't help performance, actually hurt it due to the slower SATA 2 speed of the mSATA port.

What one person did was have the OS installed on an HDD and then added an SSD and used Intel Rapid Storage Tech to turn ***a portion*** of the SSD into a caching drive. He then reinstalled Windows on the **same** SSD that has a portion of it marked as for caching. This portion didn't show up as usable space during the Windows installation. Afterward, the same SSD now is a boot drive with the OS AND has designated space for caching a single HDD or HDD raid volume.

I thought this was awesome, assuming it works as layed out. I could get an Alienware m18x with two 500 GB HDDs in raid 0 and then add a 128 GB SSD. Setup a portion of the SSD (32 GB?) for caching and then reinstall windows on the remaining 96 GB. Finally use the caching portion to increase the speed of the raid 0 HDDs.

Rob