Drive: SAS & SATA OS Supported: Windows 2003, Linux (Red Hat, SuSE) Power Consumption: 108.38 Watts (under load w/o HDD), 523.91Watts (under load with SAS HDD) Power Supply: Dual 500W, 100-240 Vac auto-ranging, 50-60Hz, dual hot swap and redundant with PFC, N+1 design Temperature: 5 to 40°C Humidity: Maximum 95% Dimensions: 5.2" x 17.6" x 22.1" Features: Dual I/O supports failover/failback and active/active drive access