On Sun, Mar 23, 2008 at 02:59:28PM -0700, Tracy R Reed wrote:

I really like this idea. Memory is plentiful and cheap. Good hardware is quite reliable these days and if you put a UPS behind it I could conceive of eventually putting a production database or some other seek-heavy application on such a storage system.

I'm not seeing how this isn't just a poorer way of implementing caching.
There's nothing novel here, except that it requires full memory for the
size of the disk, instead of using it dynamically.

There are also a lot of very important ordering issues with cachine and
disk that likely mean that actually loss with this system would be
completely catastrophic.

Almost makes me want to re-subscribe to LKML just to see the idea thrashed.

David


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