RAID

• Multiple arrays with Dedicated, Global, or Enclosure-specific hot spares
• RAID levels supported: RAID 0, 1 (0+1), 3, 5, 6, 10, 30, 50, 60, and NRAID
• ASIC400 backbone
• Online expansion by:
  • Adding new drives
  • Copying and replacing drives with drives of larger capacity
• Automatic background rebuild
• 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
• Intelligent reactive and preventive mechanisms:
  • Automated cache flush
  • Automated Media Scan
  • Automated caching mode 

System Components

• Single or Redundant controller configuration
• Compact steel and aluminum alloy enclosure
• Two (2) or one (1) RAID controller modules
• Three (3) hot-swappable, redundant, 405W power supply units
• Two (2) hot-swappable, redundant, thermal fan cooling modules
• Twenty-four (24) hot-swappable drive trays
• Two (2) forearm handles
• Two (2) hot-swappable battery backup units (BBUs)

Host Interface

• Four (4) 4G-FC host channels with embedded bypass to eight (8) Fibre ports (A24F-R2430)
• Two (2) 4G-FC host channels with embedded bypass to four (4) Fibre ports (A24F-G2430)
• Tagged command queuing up to 256
• Variable stripe size per logical drive
• Optimization setting for random or sequential I/Os

Drive Interface

• Twenty-four (24) hot-swappable 3Gbps SATA-II (3Gbps) drive trays 
• Automatic bad sector reassignment
• Dedicated bandwidth to each connected drive

Management

• Firmware-embedded utility via LCD keypad or RS-232C port
• VT-100 terminal emulation via RS-232C
• Telnet access via the onboard Ethernet port
• 10/100 BaseT Ethernet for out-of-band management
• Two (2) COM ports for local access to firmware-embedded utility and UPS connectivity
• Java-based SANWatch software with Snapshot protection:
  • Graphical user interface
  • Local/remote management; in-band or out-of-band via TCP/IP
  • Centralized management to monitor and administer multiple RAID units on one screen
  • Secure link over SSL
• Configuration Client for easy access to the configuration utility screen
• SNMP 2.0 MIBs with get and set commands

SAN Management

Up to 1024 LUNs (if sufficiently large memory is used with the proper settings)

Indicators

• Onboard alarm
• Module status LED indicators:
  • Two (2) per drive tray
  • Three (3) per LCD panel
  • Seven (7) per RAID controller module
  • Two (2) per Ethernet port
  • Two (2) per cooling module
  • One (1) per power supply unit
  • One (1) per BBU module
  • Two (2) per FC port 
• Module failure alert through I2C bus
• Event notifications sent over email, fax, LAN broadcast, SNMP traps, MSN messenger, SMS short messages
• System alerts through Java-based RAIDWatch manager

IOSmart

IOSmart allows for the flexible configuration of logical drives, logical volumes and logical partitions and ensures instant RAID availability via background logical drive initialization. Fibre loops' load balancing is provided within the subsystem. The firmware' s Adaptive Write Policy and Guaranteed Latency I/O algorithms improve write performance and ensure fast and continuous data flow.

DrvSmart

The DrvSmart utilities manage disk drive defects and help ensure data integrity. One of the main DrvSmart functions, Media Scan, retrieves data from degraded or damaged hard drives and handles low quality drives in both the degraded mode and during the rebuild process. Other DrvSmart features include disk cloning, drive roaming, SMART, transparent resetting of non-responsive hard drives, RAID parity update tracking and recovery.

SysSmart

SysSmart combines enclosure monitoring and firmware management capabilities in order to minimize the chance of down time caused by hardware failures. The SysSmart functions include the event-triggered cache flush and the various monitoring approaches combined with the powerful RAIDWatch manager. Component status, voltage and temperature readings, and system events are instantly revealed through the manager's graphical interface.

Physical/Electrical

Interfaces

• Eight (8) or four (4) FC ports that receive SFP fiber optic transceivers
• Two (2) COM ports on each controller module for RS-232C serial port (38400, n, 8, 1) and UPS support
• One (1) 10/100BaseT Ethernet port on each controller module

Power Supply Module

Three (3) redundant, hot-swappable power supplies with PFC

Input	100V at 16A, 240V at 8A with PFC (auto-switching)
	50 to 60Hz
Output	(Maximum output: 405 Watts)
	+12.0V	24A max.
	+ 5.0V	36A max.
	+ 3.3V	30A max.
Hold-up Time	At least 20ms at 115/230VAC full load after a loss of AC input

Cooling Module

Two (2) redundant, dual-fan cooling modules Maximum Air Flow: High speed: 48.12 CFM

Environmental Specifications

Temperature	Operating: 0º to 40ºC 0º to 35ºC (with BBU) Non-operating: - 40º to 60ºC
Relative Humidity	5% to 95% (non condensing - operating and non-operating)
Altitude	Operating: sea level to 12,000 ft Non-operating: sea level to 40,000 ft

Dimensions

• Chassis without handles: 445(W) x 174.4(H) x 498(D) mm (17.5 x 6.86 x 19.6 inches)
• Chassis with handles: 482(W) x 174.4 (H) x 514(D) mm (19 x 6.86 x 20.2 inches)
• Package: 520(H) x 580(W) x 780(D) mm (20.5 x 22.8 x 30.7 inches)

System weight

• Net weight: 38kg
• Gross weight: 41kg (without disk drives)