HIKVision DS-AT1000S/440

4U, Single controller, 400 Ch(2Mbps)Record+playback with Direct steaming mode,Erasure encoding and VRAID 2.0 technologies ensure data integrity even when 2 HDDs in a single RAID are error. If the number of error HDD exceeds redundant limit, other HDDs can still be read and written?22*20T Enterprise HDD(SATA) included, redundant power supply.