The Vess A6000 series storage appliance is specially engineered for IP video surveillance deployment on medium to large-scale; ideally suited for surveillance systems in banks, malls, casinos, factories, warehouses, commercial, residential, governmental or private enterprises. The subsystems are capable of continuous recording and playback operation without dropping frames. Combined with Promise technology knowhow it creates an outstanding combination of performance and reliability for midsize to large-scale surveillance deployments. For larger storage system requirements, the system is cost effect using the Promise JBOD products to extend capacity without the added expense of an additional RAID server.