Hard Drive – How to Emulate SD Card as Internal Disk

I agree with @ChrisN in not using a RAID configuration. Having an SSD should be plenty fast for most games and applications.

I've recenly bought a Samsung 840 EVO also, though it's yet to arrive in the mail. The 840 EVO series, as far as I know, comes with a RAPID setting whereby you can store your most frequently used applications to RAM. This should come close to doubling your read/write speeds on top of the already super fast SSD speeds. Set aside any applications that require a lot of horse-power to run for your SSD.

For your old hard-drive, I'd recommend using it only as a back-up. It may be older but as it won't get use it ought to be just fine.

As for your WD Black 1TB. I think you should use this drive for just about everything else one might use for storage i.e. applications that don't really require ultra-fast read/write speeds (movies, music etc.). Maybe partition a portion of this drive for additional back up if you need it. Though I've never had the need to partition a drive there plenty of tutorials online on how to do this.

Be sure to leave ~15-20% free on your drives to allow for optimal read/write speeds

Hopefully what I have answered, you found helpful. Sadly I can't answer your questions about that Windows 8 smart feature or moving games from one drive to another. I'm a Windows 7 guy who's never had the need to move games from one drive to another.

I had a similar problem with a Samsung EVO Plus SDXC 128 GB card, where I was puzzled that my changes to the file system disappeared after the card was removed from the drive. It turned out that the card was broken and I couldn't write to it although no error was reported when I edited files and their contents appeared changed. However once I removed the card or rebooted my Raspberry Pi nothing had changed.

So maybe your card is broken. I got mine replaced by Samsung for free.