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)
- 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?
There are 3 disks with 1 Tb each. most of the files are only accessed very rarely, but about 5% of each disk is used frequently. Which files are used frequently may change over time. A solid state disk with 150GB should cache the currently frequently accessed files, so that access time is faster and the drives can be put into power saving mode.