1. A method comprising: detecting a failure of a cache primary portion or a cache mirror portion of a highly-available, volatile, solid-state cache memory system included within a storage network, wherein the highly-available, volatile, solid-state cache memory system includes cache data, wherein each of the cache primary portion and the cache mirror portion contain a copy of cache data; upon detection of the failure of the cache primary portion or the cache mirror portion of the highly-available, volatile, solid-state cache memory system: replicating the cache data onto a non-volatile, solid-state cache memory system included within the storage network; and redirecting at least one data request concerning the highly-available, volatile, solid-state cache memory system to the non-volatile, solid-state cache memory system.