ES A24U-G2421

1. Full-featured RAID functionality with two (2) SCSI-320 host channels; transfer rate up to 320MBps each
2. Up to 24TB of storage capacity
3. Accommodates twenty-four (24) SATA II hard drives, backward compatible with SATA I drives
4. Hardware XOR engine by dedicated ASIC266 chipsets
5. Dual-speed cooling modules to reduce system noise
6. Backplane-based, cableless, modular enclosure

RAID

1. Multiple arrays configurable with dedicated or global hot spare drives
2. RAID levels: RAID0, 1 (0+1), 3, 5, 6, 10, 30, 50, 60,  and NRAID
3. Online expansion by:
   1. Adding new drives
   2. Copying and replacing drives with drives of larger capacity
4. Automatic background rebuild
5. Configurable stripe size and write policy per array
6. Intelligent drive handling:
   1. In degraded mode: skips irreparable blocks to continue rebuild
   2. In normal operation: data-block verification and repair

System Components

1. Single RAID controller configuration provides full-featured RAID functionality
   1. One (1) 4U enclosure
   2. One (1) RAID controller module
   3. One (1) 512MB DDR RAM DIMM module preinstalled on the controller module; system supports 512MB to 2GB capacity DIMM modules
   4. Three (3, N+1) hot-swappable, redundant, 405W power supply units
   5. Twenty-four (24) hot-swappable drive trays
   6. Two (2) hot-swappable, redundant cooling modules
   7. Two (2) forearm front handles
   8. One (1) optional battery backup unit (BBU)

Host Interface

1. Two (2) SCSI-320 host channels interfaced through two (2) dual-stacked VHDCIs
2. Tagged command queuing up to 256
3. Host-side ordered tag support

Drive Interface

1. Twenty-four (24) hot-swappable 3Gbps SATA II drive trays that accommodate 1-inch pitch SATA II or SATA I disk drives
2. Native Command Queuing (NCQ) support
3. Dedicated bandwidth to each connected drive
4. Automatic bad sector reassignment

Management

1. Firmware-embedded utility via LCD keypad or RS-232C terminal
2. 10/100BaseT Ethernet for out-of-band management
3. Two (2) COM ports for local access to firmware-embedded utility and UPS connectivity
4. Telnet access via onboard Ethernet port
5. Java-based RAIDWatch® Manager
   1. Graphical user interface
   2. Local/remote management; in-band or out-of-band via TCP/IP
   3. Centralized management of multiple subsystems from one management computer
   4. A variety of event notification methods via the Configuration Client sub-module: email, fax, LAN broadcast, SNMP traps, MSN messenger, ICQ, and SMS short messages
   5. Secure link over SSL

Indicators

1. Onboard alarm
2. Module status LED indicators
   1. Two (2) per drive tray
   2. Two (2) per cooling module
   3. One (1) per power supply unit
   4. One (1) per BBU module
   5. Three (3) per LCD panel
   6. Four (4) per RAID controller module
   7. Two (2) per Ethernet port
3. Module failure indication and temperature/voltage readings through I²C bus

Physical/Electrical

Interfaces

Four (4) 68-pin VHDCIs in dual-stacked configurations Two (2) COM ports for RS-232C terminal and UPS connection (38400, n, 8, 1) One (1) 10/100BaseT Ethernet port

Power Supply Module

Three (3) redundant, hot-swappable power supplies with PFC

Cooling Module

Two (2) redundant, dual-fan cooling modules

Environmental Specifications

Dimensions

1. Chassis without handles: 445W x 174.4H x 498D mm (17.6 x 6.86 x 19.6 inches)
2. Chassis with handles 482W x 174.4H x 514D mm (18.97 x 6.86 x 20.2 inches)
3. Package: 590W x 480H x 700D mm

System Weight

1. Net weight: 36.5kg
2. Gross weight: 39.6kg

Spare Parts

	IFT-9373CDTray	3.5" Hard disk drive tray
	IFT-9274CPSU	Power supply module, EonStor 4U 24-bay subsystems, 405W (N+1) capacity
	IFT-9274CFanMod	Cooling fan module for EonStor 4U 24-bay subsystems
	IFT-9274CHandLLCD	Left-side forearm handle for EonStor 4U 24-bayRAID subsystems, LCD panel included
	IFT-9274CHandR	Right-side forearm handle for EonStor 4U 24-bay subsystems
	IFT-84AU24GD24E2	SCSI to SATA RAID controller module, for ES A24U-G2421-2 subsystem, 4 x SCSI-320 VHDCI host connectors, RAID 6.
	IFT-DDRESCEM5	512MB DDR RAM DIMM module, for ASIC266 platform
	IFT-9270ASCab	RS-232C serial cable, audio-jack to DB9
	IFT-9011	Null Modem, DB9 female to DB9 male, wires swapped

Accessories

	IFT-9272CDTrayDmy	Dummy Drive tray, Type-II bezel
	IFT-9274CBTE	Battery cell pack, Li-Ion, EonStor 4U 24-bay subsystems
	IFT-9270UHstCab	SCSI external round cable, DB68 to VHDCI
	IFT-9270UJBODCab	SCSI external round cable, VHDCI to VHDCI
	IFT-9270CUPSCab	UPS cable, audio-jack to DB9
	IFT-9373CSLIDER36	Slide rail assembly, for all EonStor G6 and EonStor DS subsystems, 24"~36" rack depth
	IFT-DDRESCEMA	1GB DDR RAM DIMM module, for ASIC266 platform