1. A method for managing data by a processor in a multi-tiered computing storage environment, comprising: examining Input/Output (I/O) statistics from each of cache and device drivers in the computing storage environment; and based on the I/O statistics, apply a ranking mechanism to differentiate data between at least a cache and a Solid State Drive (SSD) rank, wherein the ranking mechanism migrates data between the cache and SSD rank such that storage space in the cache is reserved for those of a plurality of data workload types having a greater adverse effect on a storage performance characteristic if stored in the SSD rank than if those workload types were stored in the cache.