CACHEfx is a storage caching appliance that can accelerate storage performance for real-time applications by caching frequently accessed files in RAM. It complements existing storage infrastructure, provides a centralized cache resource that can scale easily, and simplifies storage configurations. The CACHEfx appliance caches files served from NAS filers and delivers them 10-50 times faster to application and database servers, helping to reduce storage over-provisioning and improve quality of service.