OPTIMIZED PLACEMENT POLICY FOR SOLID STATE STORAGE DEVICES

摘要

A data storage system is provided comprising several flash arrays in a board and stacking these boards to attain a high-capacity solid state hard drive. A remap table is used to map all logical addresses from a host system to the actual physical addresses where data are stored. The assignments of these physical locations are done in such a way that the load of the system is evenly distributed to its available resources. This would ensure that the storage system operates efficiently by utilizing its resources properly. To achieve this, the system follows a placement policy that attempts to evenly distribute the physical location of data according to the current load of the system.