The Dell PowerVault MD3820i SAN is a high-performance network storage disk array designed for enterprise networking and server use. This rack-mountable SAN features two 10G-iSCSI controllers, twelve 1.8TB 10k SAS drives, redundant powersupplys, rack rails and front bezel.This unit was recently taken out of production in perfect working condition. There are now however, messages stating "The battery for realtime clock and NVSRAM must be replaced". If you are not familiar with the operations andfunctionality of this item; please do not purchase it. Console connection tested on both controllers to see/clear battery error (custom console cable included).