A12U/A08U-G2421

• SCSI-320 to SATA-II single controller RAID subsystem
• Hardware XOR engine by dedicated ASIC266 chipsets
• Dual-speed fans to reduce noise
• Enhanced modular enclosure design
• DDR Memory up to 2GB

RAID

• Multiple arrays configurable with dedicated or global hot spares
• RAID levels supported: RAID 0, 1 (0+1), 3, 5, 10, 30, 50, and NRAID
• Online expansion by:
• Adding new drives
• Copying and replacing drives with drives of larger capacity
• Automatic background rebuilds
• 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 (2) SCSI-320 through four (4) VHDCI 68-pin SCSI ports; SCSI-160 backward compatible
• Concurrent I/O commands
• Tagged command queuing up to 256
• Variable stripe size per logical drive
• Optimization setting for random or sequential I/Os

Drive Interface

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

System Components

Single controller configuration provides full RAID functionalities

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

Management

• Front LCD control panel for setup and configuration
• 10/100 BaseT Ethernet for out-of-band management
• One (1) RS-232C serial port for local access to firmware-embedded utility
• Firmware-embedded Java-based RAIDWatch® GUI manager:
• VT-100 terminal emulation via RS-232C
• Telnet access via onboard Ethernet port
• Cross-platform, remote administration with SSL
• Out-of-band access via Ethernet
• Centralized management to monitor and administer multiple RAID units on one screen
• 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
• SNMP agent support:
• SNMP trap event notification with plain-text event message (no MIB file required)
• SNMP V2.0 MIB file support with get-and-set commands

Indicators

• RAID controller module
• Cooling module
• Power supply unit
• Hard drive
• BBU module
• Module status LED indicators:
• Two (2) per drive tray
• Two (2) per cooling module
• One (1) per power supply unit
• One (1) per BBU module
• Three (3) per LCD panel
• Five (5) per RAID controller module
• Two (2) per Ethernet port

• Module failure alert through I²C bu

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.

IOSmart

• Multiple, co-existing logical drives, logical volumes, and logical partitions
• Instant RAID availability via background initialization.
• Multi-path load balancing
• Streaming I/O Optimization by outstanding I/Os
• Adaptive Write Policy and Guaranteed Latency I/O
• Intelligent switch between caching modes
• Non-staggering data flow for bandwidth-oriented applications

DrvSmart

• Media Scan: manual or scheduled scans to repair data from hard drive media errors
• Disk Cloning, Copy & Replace, Drive Roaming
• SMART support, transparent resetting of non-responsive hard drives
• RAID parity update tracking and recovery

SysSmart

• Event-triggered operation: raises fan speed and adopts conservative caching policy in degraded mode
• Real-time monitoring of component statuses, voltage, and temperature readings
• Various methods to save/retrieve configuration profile and system events
• Battery life expectancy aware

Infortrend Smart Technologies

Derived from more than ten years experience in RAID storage design, Infortrend's innovative firmware delivers Smart technologies that provide enhanced storage solutions for every customer environment, from small organizations to large enterprises. These technologies enhance I/O processing, drive handling, and system management.

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.

Physical/Electrical

Interfaces

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

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: 381H x567W x 772D mm

System Weight

• Net weight: 23.5kg
• Gross weight: 25kg 

A12UA08U-G2421

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