Hi

Given a PC with several hard drives: Is it possible to use one fast disk as a giant file cache?

I.e. automatically copying frequently accessed data to that one disk, and transparently redirecting reads and writes to that disk, so that other drives would only have be accessed occassionally.

(writes would have to be forwarded to the other disks after a while of course)

Advantages:

• the other drives could be powered down most of the time; reducing power, heat, noise
• speed of the other drives would not matter much.
• cache disk could be solid state.

How can I set such a system up?

What OS supports these options? Is this possible at all using Windows or Linux?