Flexible Data tiering
StorPool offers a data tiering functionality. It is implemented by allowing users to make groups, (pools), of drives on which to place data. For example the user can make a pool of SSDs and place important data with high performance requirements on this set of drives, and then they can make another pool for HDD drives and place data which has lower performance requirements, on these drives. The user can then live migrate data between the pools.
The data tiering functionality also allows the building of hybrid pools, where a copy of the data is stored on SSDs and redundant copies are stored on HDDs. This hybrid system delivers near all SSD performance, but at a much lower cost. This functionality also allows customers to deliver “data locality”, by placing data on a particular compute node, which is going to access the data locally.