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. 3U RAID enclosure or JBOD
2. Single or dual redundant RAID controllers
3. 16 drive trays
4. Dual redundant power supplies
5. 2 hot-swappable fan modules
6. 2 hot-swappable expansion port modules

Management

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

Drive Interface

1. Up to 1024 LUNs if sufficiently large memory is used with the proper settings
2. 3.5", 1" high disk drives
3. 16 hot-swappable drive trays
4. Automatic bad sector reassignment
5. Drive hot-swappable via SCA-II connectors
6. Dual channels across 16 drives within each enclosure

Host Interface

1. Auto-negotiate FC-AL, point-to-point, and switched fabric
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. Firmware rolling upgrade on redundant RAID controllers
2. Synchronized cache over
   1. R2A2: over shared drive loops
   2. R2A2-A: over dedicated communications loops
3. Li-ion battery support, comes standard with R2A2/R2A2-A
4. Immediate array availability
5. Drive roaming, array configuration on drives
6. 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

4 (JBOD), 6 (single controller), or 8 (dual controllers) SFP sockets using a short-wavelength adapter, one DB-9 RS-232C serial port (38400, n, 8, 1), and 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, 32A max.; +3.3V, 20A max.; 460watts capacity

Cooling fan

1. 4 cooling fans in two 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: 131H x 446.2W x 500D mm
2. (w/ protrusions): 131H x 485W x 532D mm
3. Package dimensions: 476H x 592W x 695D mm

System weight (w/o drives):

1. Net weight: 20kg
2. Gross weight: 32kg