RAID
				
					- 
						Supports all standard RAID functionality
 
					- 
						Supports RAID 0, 1 (0+1), 3, 5, 10, 30, 50, and NRAID
 
					- 
						Configurable stripe size and write policy per array
 
					- 
						Intelligent Drive Handling:
						
							- 
								In degraded mode: skips irreparable blocks to continue rebuild
 
							- 
								In normal operation: data-block verification and repair
 
						
					 
				
				
					Host Interface
				
					- 
						Two ( A12E-G2121-2) 1 Gbps Ethernet
 
					- 
						Concurrent I/O commands
 
					- 
						Tagged command queuing up to 256
 
					- 
						Adaptive cache write policies
 
				
				
					Drive Interface
				
					- 
						Twelve (12) 3.0Gbps SATA-II (3Gbps) , hot-swappable drive trays
 
					- 
						Accommodates 1-inch pitch, 3.5-inch SATA-II (3Gbps) or SATA-I disk drives
 
					- 
						SATA-to-PATA dongle kit available to accommodate PATA drives
 
					- 
						Automatic bad-sector reassignment
 
					- 
						Dedicated bandwidth to each connected drive
 
				
				
					System Components
				
					- 
						One (1) enhanced 2U enclosure
 
					- 
						One (1) RAID and I/O management module
 
					- 
						One (1) 256MB DDR RAM DIMM module (pre-installed on the controller module)
 
					- 
						Two (2), hot-swappable, redundant, 350W power supply units
 
					- 
						Three (3), hot-swappable, redundant, cooling modules running in high/low speeds
 
					- 
						Twelve (12), hot-swappable drive trays
 
					- 
						Two (2) front handles
 
					- 
						Optional battery backup unit (BBU)
 
				
				
					Management
				
					- 
						One (1) RS-232C serial port for local access to firmware-embedded utility
 
					- 
						GUI, Telnet, and SSH system monitoring via Ethernet
 
					- 
						RAIDWatch manager software for Windows and Linux platforms
 
					- 
						Firmware-embedded manager via RS-232C (audio jack) that is platform independent
 
					- 
						Widest range of event notification methods including email, LAN broadcast, fax, SNMP traps, SMS, MSN, and ICQ
 
					- 
						Module status LED indicators:
						
							- 
								Two (2) per drive tray
 
							- 
								Nine (9) or per controller module
 
							- 
								One (1) per power supply unit
 
							- 
								One (1) per BBU module
 
							- 
								One (1) per cooling module
 
						
					 
					- 
						Module failure alert through I 2 C bus
 
				
				
					Interfaces
				
					- 
						Two (2) RJ-45 ports for Cat5e copper Ethernet networks
 
					- 
						One (1) COM port (38400, n, 8, 1)
 
				
				
					Power Supply Module
				
					Two (2) redundant hot-swappable power supplies with PFC
				
					
						
							| 
								Input | 
							
								100VAC at 6A, 240VAC at 3A with PFC (auto-switching) | 
						
						
							| 
								47 to 63Hz | 
						
						
							| 
								Output | 
							
								(Maximum output: 350 Watts) | 
						
						
							| 
								+12.0V | 
							
								25A max. | 
						
						
							| 
								+ 5.0V | 
							
								25A max. | 
						
						
							| 
								+ 3.3V | 
							
								20A max. | 
						
					
				
				
					Cooling Module
				
					Three (3) redundant dual-fan cooling modules
				
					
						
							| 
								Maximum air flow | 
							
								High speed: 31.78 DFM 
								Low speed: 20.13 CFM | 
						
					
				
				
					Environmental Specifications
				
					
						
							| 
								Operating temperature | 
							
								5° to 40°C | 
						
						
							| 
								Non-operating temperature | 
							
								- 40º to 60ºC | 
						
						
							| 
								Relative humidity: | 
							
								5~95%, non-condensing | 
						
						
							| 
								Operating altitude | 
							
								Operating: 0~12,000 ft | 
						
					
				
				
					Dimensions
				
					- 
						Chassis without handles: 446(W) x 88(H) x 490(D) mm
 
					- 
						Chassis with handles: 482(W) x 88(H) x 505(D) mm
 
					- 
						Package: 344H x 600W x 670D mm
 
				
				
					System Weight
				
					- 
						Net weight: 23.5kg
 
					- 
						Gross weight: 25.0kg (without drives)