ESDS 4024RUCB-C EonStor DS 4000 Gen2 ultra performance 2U​/24bay,​ dual redundant controller subsystem including 4x12Gb​/s SAS EXP. ports,​ 4x1G Iscsiports +4x host board slot(s),​ 2x4GB,​ 2x(PSU+FAN Module