- Extremely high-density 4U storage server chassis (saves 2U space) - Maximum drives per enclosure: 72x (48 front + 24 rear) 2.5" hot-swap HDD bays for server chassis - Optional rear 2.5" removable HDD - E1C: SAS3 (12Gbps) single expander backplane; E2C: SAS3 (12Gbps) dual expander backplanes - 1280W Platinum Level (1+1) redundant power supplies with PMBus - Optimized thermal solution with 100% redundant cooling design