Host Ports Four 12Gb/s SAS ports (2 per controller) Drive Connectivity 12Gb/s SAS connectivity S.M.A.R.T. support Automatic bad-sector reassignment Dedicated bandwidth to each connected drive Supported Drives Please refer to corresponding RAID systems Maximum Number of Drives Per system: 12 Corresponding RAID Please refer to Related Information Rack Support 2U, 19-inch rackmount Green Design 80 PLUS-certified power supplies delivering more than 80% energy efficiency Intelligent multi-level drive spin-down Availability and Reliability Redundant, hot-swappable hardware modules Service and Support Standard service: 3-year limited hardware/software warranty and 8x5 phone, web, and email support Upgrade/Extension service: replacement part dispatch on the next business day (up to 5 years) Advanced Service: 24x7 phone, web and email support + onsite diagnostics on the next business day Premium Service: 24x7 phone, web and email support + onsite diagnostics in 4 hours Power Power supplies: Two 460W AC voltage: 100VAC 8A to 240VAC 4A with PFC (auto-switching) Frequency: 50-60 Hz Environmental Temperature: 0 to 40C operating/ -40 to 60C non-operating Altitude: Sea level to 3660m (12,000ft) operating / sea level to 12,192m (40,000ft) non-operating Relative humidity: 5 to 95% non-condensing, operating and non-operating Item Dimension (L inchxW inchxH inch) 18 x 4 x 20 Weight 25.90lb Warranty Information NA