Avigilon’s High Definition Network Video Recorder (NVR) Storage Expansion can be used to expand the recording capacity of any Avigilon NVR server. Enterprise-class reliability with a RAID 6 hard drive configuration and a redundant power supply ensure the safekeeping of all of your HD footage. Both the hard drives and power supplies are hot-swappable for online repairs. The storage expansion has up to a 30 TB effective recording capacity all in a 2U rack mount chassis. It connects directly to an NVR server using a SAS cable.