SSDs are small, expensive but fast. HDDs are large and cheap, but slow. Let’s combine the two technologies to get the speed of SSDs with the price and size of HDDs. This can be achieved with storage tiering using LVM cache. Hardware vs. Software solutions There are so-called “Hybrid HDDs” on the market. The SSD part is relatively small and you can not tune that cache or getting any statistics about cache hits and cache misses. Further, modern SSD provides ….Read More