QThin uses our advanced storage pool architecture to achieve this functionality. The capacity of the storage pool is shared by all volumes inside the pool. This means that the XCubeSAN is able to support more host servers with a fewer number of hard drives, thereby reducing initial acquisition cost. As the storage pool fills, you can add extra disk groups to expand the storage pool capacity without downtime.
Therefore, to balance performance and cost factors, adapting a hybrid storage architecture with a mixture of SSDs and traditional HDDs seem to be the most reasonable approach for modern IT environments. An automated tiering pool is a simple and elegant solution for dynamically matching storage requirements with changes in the frequency of data access.