ES A12U-G2421

1. SCSI-320 to SATA-II (3Gbps) single controller RAID subsystem
2. Hardware XOR engine by dedicated ASIC266 chipsets
3. Dual-speed fans to reduce noise
4. Enhanced modular enclosure design
5. DDR Memory up to 1GB

RAID

1. Multiple arrays configurable with dedicated or global hot spares
2. RAID levels supported: RAID 0, 1 (0+1), 3, 5, 10, 30, 50, and NRAID
3. Online expansion by:
   1. Adding new drives
   2. Copying and replacing drives with drives of larger capacity
4. Automatic background rebuilds
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

Host Interface

1. Two (2) SCSI-320 through four (4) VHDCI 68-pin SCSI ports; SCSI-160 backward compatible
2. Concurrent I/O commands
3. Tagged command queuing up to 256
4. Variable stripe size per logical drive
5. Optimization setting for random or sequential I/Os

Drive Interface

1. Twelve (12) or eight (8) 3Gbps SATA-II (3Gbps) , hot-swappable drive trays that accommodate 1-inch pitch, 3.5-inch SATA-I or SATA-II (3Gbps) disk drives
2. Automatic bad-sector reassignment
3. Dedicated bandwidth to each connected drive

System Components

Single controller configuration provides full RAID functionalities

1. One (1) EonStor® enhanced 2U enclosure
2. One (1) RAID controller module
3. One (1) 256MB DDR RAM DIMM module (pre-installed on the controller module)
4. Two (2), hot-swappable, redundant, 350W power supply units
5. Three (A12U) or Two (A08U), hot-swappable, redundant, single-fan cooling modules running in high/low speeds
6. Twelve (12) or eight (8), hot-swappable drive trays
7. Two (2) front handles
8. Optional battery backup unit

Management

1. Front LCD control panel for setup and configuration
2. 10/100 BaseT Ethernet for out-of-band management
3. One (1) RS-232C serial port for local access to firmware-embedded utility
4. Java-based RAIDWatch® GUI manager:
   1. VT-100 terminal emulation via RS-232C
   2. Telnet access via onboard Ethernet port
   3. Cross-platform, remote administration with SSL
   4. Out-of-band access via Ethernet
5. Centralized management to monitor and administer multiple RAID units on one screen
6. Configuration client for real-time event notification over Email, Fax, LAN broadcast, SNMP Traps, MSN messenger, ICQ, SMS short messages, and the configuration utility screen
7. SNMP agent support:
   1. SNMP trap event notification with plain-text event message (no MIB file required)
   2. SNMP V2.0 MIB file support with get-and-set commands
8. IndicatorsOnboard alarm is triggered when one of the following modules fails:
   1. RAID controller module
   2. Cooling module
   3. Power supply unit
   4. Hard drive
   5. BBU module
9. 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. Five (5) per RAID controller module
   7. Two (2) per Ethernet port
10. Module failure alert through I²C bus

Intelligent Drive Handling

If two bad blocks occur on two member drives of an array, the integrity of the stored data is endangered. Media Scan, Infortrend's innovative intelligent drive handling function, retrieves data from the damaged sectors. Media Scan handles low quality drives in both the degraded mode and during the rebuild process. For additional data security, other intelligent drive management features include the transparent resetting of hung hard drives, power-failure management, and bad-drive handling during LD expansion.

Task Scheduler

The Task Scheduler is combined with Media Scan so that the scanning operation can be scheduled beginning at a specified start time and repeating at the configurable intervals. The operation is thus hands free. Each such schedule can be defined to operate on individual hard drives, all drives of a certain class, all member drives of a specified logical drive, or all member drives of all logical drives.

Interfaces

1. Four (4) ports in two (2) dual-stacked VHDCI SCSI connectors
2. One (1) COM port (38400, n, 8, 1)
3. One (1) 10/100BaseT Ethernet port

Power Supply Module

Two (2) redundant hot-swappable power supplies with PFC

Cooling Module

Three (A12U) or two (A08U) redundant single-fan cooling modules

Environmental Specifications

Dimensions

1. Chassis without handles: 446(W) x 88(H) x 490(D) mm
2. Chassis with handles: 482 (W) x 88(H) x 505(D) mm
3. Package: 381H x567W x 772D mm

System Weight

1. Net weight: 23.5kg
2. Gross weight: 25kg

Spare Parts

	IFT-9373CDTray	3.5" Hard disk drive tray
	IFT-9272CPSU	Power supply module, EonStor 2U DDR-interface subsystems, 350W capacity
	IFT-9272CFanModE	Intelligent Cooling fan module for EonStor 2U DDR-interface subsystems
	IFT-9272CHandLLCD	Left-side forearm handle for 2U RAID subsystems, LCD panel included
	IFT-9272CHandR	Right-side forearm handle for 2U subsystems
	IFT-82AU24GD08	SCSI to SATA RAID controller module, for ES A08U-G2421 subsystem, 4 x SCSI-320 VHDCI host connectors.
	IFT-82AU24GD08M2	SCSI to SATA RAID controller module, for ES A08U-G2421 subsystem, 4 x SCSI-320 VHDCI host connectors, 256MB DDR RAM.
	IFT-82AU24GD12	SCSI to SATA RAID controller module, for ES A12U-G2421 subsystem, 4 x SCSI-320 VHDCI host connectors.
	IFT-82AU24GD12M2	SCSI to SATA RAID controller module, for ES A12U-G2421 subsystem, 4 x SCSI-320 VHDCI host connectors, 256MB DDR RAM.
	IFT-DDRESCM2	256MB DDR RAM DIMM module, for ASIC266 platform
	IFT-9270UJBODCab	SCSI external round cable, VHDCI to VHDCI
	IFT-9270ASCab	RS-232C serial cable, audio-jack to DB9
	IFT-9011	Null Modem, DB9 female to DB9 male, wires swapped

Accessories

	IFT-9273CBTC	Battery cell pack, Li-Ion, Enhanced EonStor 12-bay subsystems
	IFT-9270UHstCab	SCSI external round cable, DB68 to VHDCI
	IFT-9272CESlide28	Enhanced Slide rail assembly for 2U enclosures, 21"~28.5" rack depth
	IFT-9272CESlide36	Enhanced Slide rail assembly for 2U enclosures, 25.5"~36" rack depth
	IFT-DDRESCEM5	512MB DDR RAM DIMM module, for ASIC266 platform
	IFT-DDRESCEMA	1GB DDR RAM DIMM module, for ASIC266 platform