Tekram-U4812

2U 12Bay SATA RAID Subsystem

Tekram U4812 Ultra 320 SCSI to SATA RAID disk array subsystem addresses the high growth , business applications on mid and high-range storage market, combining cost-effective SATA technology with RAID 6 Robust ASIC engine performance and reliability. It is ideal for reference data and fixed content applications where data availability, throughput and constant access to storage resources are critical.

Highest density for 2U chassis
• 2U chassis with 12 bays carriers
• Over 3 Terabytes per chassis
• Capacity of volume set over 2 TB

Extraordinary Fault Tolerance
• Proven Areca RAID 6 ASIC engine provides the highest level of data protection
• RAID level 0, 1(0+1), 3, 5, 6, and JBOD
• Flexible RAID: Online capacity expansion and RAID level migration simultaneously Online dynamic Volume expansion – volume set, capacity, RAID level, and stripe size.
• NVRAM transaction log, and S.M.A.R.T. for drives to improve the RAID system integrity, reliability, and availability.

Advanced management, monitoring, and configuration
• RAID subsystem environment and drives monitoring and Alarm
• Embedded Enclosure management utility- LCD control panel and VT-100 terminal emulator
• Embedded Web browser based Mc RAID manager for Windows, Linux, FreeBSD environment
• Redundant RAID controller firmware upgrade flash process.
• Intuitive, comprehensive GUI for configuration and monitoring from remote and local.

Hot-swappable modular Architecture
•RAID controller box, dual power supply units, dual cooling fans and SATA mid-plane for drive bay.

System Architecture
• Intel 80321 400MHz 64bit I/O processor
• 256MB on-board cache memory with ECC protection,
• upgradeable to 1GB ECC 200MHz DDR SDRAM
• Areca SATA RAID 6 ASIC engine controller
• NVRAM for RAID configuration & transaction log
• Write-through or write-back cache support
• Redundant firmware in Flash ROM for easy upgrades
• Battery Backup Module(BBM) ready

RAID Features
• RAID level 0, 1 (0+1), 3, 5, 6 and JBOD
• Multiple RAID selection
• Online Array roaming
• Online RAID level/ stripe size migration
• Online RAID capacity expansion and RAID level migration simultaneously
• Instant availability and background initialization
• Automatic drive insertion / removal detection and rebuilding
• Greater than 2TB per volume set (64-bit LBA support)

Drive Interface
• Serial ATA with 1.5Gbps compatible with hot swap mechanism

Host Interface
• Ultra 320 SCSI, transfer rate up to 320MB/sec

RAID Management
• Field-upgradeable firmware in flash ROM
• Web browser-based RAID management via HTTP PROXY through RS-232 port for windows & Linux system
• Firmware-embedded manager via RS-232 port(platform independent)

Monitors / Indicators
• LCD Control Panel for setup and configuration
• System status indication through LCD, LED and alarm buzzer
• Built-in beeper / alarm mute button

Power Supply and Cooling Fan
• 2 redundant hot-swappable power supplies each with a cooling fan
• Input: 110V-240VAC, 9A/5A, 50/60Hz
• Output: @5V(25A max), 12V(32A max), 3.3V(20A max)

Dimensions
• Rack-mount Dimension: 537L × 430W × 88H mm

Weight
• 48.4LB / 22Kg

Environment
• Operating Temperature: +5°C to +40°C
• Operating Humidity: 15-80%, non-condensing
• Storage Temperature: -25°C to 60°C
• Storage Humidity: 5-90%, non-condensing

Probability of logical drive failure for different RAID level

RAID 6 data guarding technology allows to tolerate two drives failures concurrently, and still can keep the integrity of whole data. Nowadays, the available storage capacity is lager and larger resulting from continuous development of hard disk technology. According to the statistic, when the capacity of hard disk is over 500GB, there may be about 5% average defects in data rebuilding. Only ASIC RAID 6 engine can reduce the data failure during rebuilding and eliminate the bottleneck, to provide the reliability 1000 times better than RAID 5.