Specifications

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 rebuild
5. Configurable stripe size and write policy per array
6. Intelligent Drive Handling
   1. In degraded mode: Skipping irreparable blocks to continue rebuild
   2. In normal operation: Data block verification and repair

System Components

Redundant, hot-swappable components, designed for no single point of failure

1. 2U RAID enclosure
2. Single RAID controller
3. 12 drive trays
4. Dual redundant power supplies
5. 2 hot-swappable fan modules

Management

1. Firmware-embedded Java-based GUI RAID manager
2. Centralized management of multiple arrays over in-band SCSI or Ethernet
3. Real-time event notification over Email, LAN broadcast, or SNMP traps
4. Auto on-lining of cascaded enclosures
5. SNMP 2.0 MIBs with get and set commands
6. Firmware-embedded utility via LCD keypad or RS-232C port

Drive Interface

1. 3.5", 1" high disk drives
2. 12 hot-swappable drive trays
3. Automatic bad sector reassignment
4. Drive hot-swappable via SCA-II connectors
5. Dual channels across 12 drives within each enclosure

Host Interface

1. 2 x VHDCI 0.8mm SCSI
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

Maintenance & Availability

1. Optional Li-ion battery support
2. Immediate array availability
3. Auto switch cache policy and Auto shutdown

When a RAID controller detects conditions exceeding preset thresholds, the following actions will be exerted to protect the hardware:

1. Automatically flush cached data and switch the array’s caching mode from write-back to write-through
2. Commence an auto shutdown

What is remarkable is all environmental thresholds associated with this mechanism are user-configurable and that caching mode changes back to write-back once normal condition is restored.

Physical/Electrical

Interfaces:

1. 2 VHDCI 0.8mm SCSI connectors
2. One RS-232C (Audio Jack) serial port (38400, n, 8, 1)
3. One RJ-45 Ethernet port

Power supply:

1. 2 redundant, hot-swappable power supplies with PFC
2. Input: 90~260VAC, 47~63Hz
3. Output: +5V, 25A max.; +12V, 24A max.; +3.3V, 20A max.; 350watts capacity

Cooling fan

1. 3 cooling fans in three separate modules:
2. Operating temperature: 5 to 40°C
3. Non-operating temperature: - 40º to 60ºC
4. Relative humidity: 10~95%, non-condensing
5. Operating altitude: sea level to 10,000ft

Dimensions:

1. Chassis dimensions: 88H x 446.2W x 486.5D mm
2. (w/ protrusions): 88H x 481W x 525D mm
3. Package dimensions: 344H x 600W x 670D mm

System weight (w/o drives):

1. Net weight: 18kg
2. Gross weight: 25.5kg