1. A method, comprising: receiving, by a storage controller that includes a cache, a command from a host, wherein a set of criteria corresponding to read and write response times for executing the command have to be satisfied; determining, by the storage controller, ranks of a first type and ranks of a second type corresponding to a plurality of volumes coupled to the storage controller, wherein the command is to be executed with respect to the ranks of the first type; and adjusting destage rate corresponding to the ranks of the first type to be less than a default destage rate corresponding to the ranks of the second type, wherein the set of criteria corresponding to the read and write response times for executing the command are satisfied.