The A12U-G2421 & A08U-G2421 feature reliable SCSI host interfaces and large, cost-effective SATA disk drives. The series models are ideal for building a shared storage pool for data backup in the digital media, broadcast, medical imaging, and security/ surveillance environments.
Feature Highlights
SCSI-320 to SATA-II (3Gbps) 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 1GB
Specifications
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 (3Gbps) , hot-swappable drive trays
that accommodate 1-inch pitch, 3.5-inch SATA-I or SATA-II (3Gbps) 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
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 Onboard alarm is triggered when one of the following modules fails:
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 bus