A solid state disk drive is provided among the storage devices controlled by a storage controller. The solid state disk drive may serve as a level 2 cache using standard multi-level cache management algorithms. The solid state disk may share a drive channel with other storage devices or may have a dedicated...http://www.google.de/patents/US7136966?utm_source=gb-gplus-sharePatent US7136966 - Method and apparatus for using a solid state disk device as a storage controller cache
