So hard drives for quite some time have had 8 MB of cache, and I have noticed some new Maxtor drives are starting to have 16 MB cache. Why don't we have more than this? Wouldn't having a hard drive with say 128-256 MB of cache, speed things up considerably? So it could copy large amounts of information to the cache, and finishing writing it to disk in the background?
Maybe I don't fully understand how a hard drive works, or something?