Latest NAStorage
5.60 Firmware
Latest NAStorage 84xx 2.60 Firmware
Above 2TB NAStorage 84xx / 44xx 3.05 Firmware

A24U-G2421 <<<Go Back
  • Full-featured RAID functionality with two (2) SCSI-320 host channels; transfer rate up to 320MBps each
  • Up to 12TB of storage capacity
  • Accommodates twenty-four (24) SATA II hard drives, backward compatible with SATA I drives
  • Hardware XOR engine by dedicated ASIC266 chipsets
  • Dual-speed cooling modules to reduce system noise
  • Backplane-based, cableless, modular enclosure
RAID
Multiple arrays configurable with dedicated or global hot spares

RAID levels supported: RAID 0, 1 (0+1), 3, 5, 10, 30, 50, NRAID and JBOD

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
    If two bad blocks occur on two member drives of an array, the integrity of the stored data is endangered. Media Scan, Infortrend's innovative intelligent drive handling function, retrieves data from the damaged sectors. Media Scan handles low quality drives in both the degraded mode and during the rebuild process. For additional data security, other intelligent drive management features include the transparent resetting of hung hard drives, power-failure management, and bad-drive handling during LD expansion.

    System Components

    Single RAID controller configuration provides full-featured RAID functionality

    • One (1) 4U enclosure
    • One (1) RAID controller module
    • One (1) 256MB DDR RAM DIMM module preinstalled on the controller module; system supports 256MB to 2GB capacity DIMM modules
    • Three (3, N+1) hot-swappable, redundant, 405W power supply units
    • Twenty-four (24) hot-swappable drive trays
    • Two (2) hot-swappable, redundant cooling modules
    • Two (2) forearm front handle
    Management

    Firmware-embedded utility via LCD keypad or RS-232C terminal
    10/100BaseT Ethernet for out-of-band management
    Two (2) COM ports for local access to firmware-embedded utility and UPS connectivity
    Telnet access via onboard Ethernet port
    Java-based RAIDWatch® Manager Graphical user interface

    • Local/remote management; in-band or out-of-band via TCP/IP
    • Centralized management of multiple subsystems from one management computer
    • A variety of event notification methods via the Configuration Client sub-module: email, fax, LAN broadcast, SNMP traps, MSN messenger, ICQ, and SMS short messages Secure link over SSL
    Drive Interface
    Twenty-four (24) hot-swappable 3Gbps SATA II drive trays that accommodate 1-inch pitch SATA II or SATA I disk drives
    Native Command Queuing (NCQ) support
    Dedicated bandwidth to each connected drive
    Automatic bad sector reassignment
    Host Interface
    Two (2) SCSI-320 host channels interfaced through two (2) dual-stacked VHDCIs
    Tagged command queuing up to 256
    Host-side ordered tag support
    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

    Notification Processing Center (NPC) for real-time event notification over email, LAN broadcast, or SNMP traps
    Module status LED indicators:
    Two (2) per drive tray
    Two (2) per cooling module
    One (1) per power supply unit
    Three (3) per LCD panel
    Six (6) per RAID controller module

    Module failure alert through bus

    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:

  • Cached data is automatically flushed and the array’s caching mode switches from write-back to write-through mode.
  • If conditions persist past the preset period of time, auto shutdown of the controller will commence.

    All thresholds associated with this mechanism are user configurable and, once a subsystem manager restores the normal operating conditions, the caching mode changes from write-through back to write-back mode.

  • Physical/Electrical
    Four (4) 68-pin VHDCIs in dual-stacked configurations
    Two (2) COM ports for RS-232C terminal and UPS connection (38400, n, 8, 1)
    One (1) 10/100BaseT Ethernet port
    Power supply
    Three (3) redundant, hot-swappable power supplies with PFC
    Nominal Power 405W
    DC Output +3.3V: min. 0.5A, max. 20A
    +5V: min. 2.5A, max. 36A
    +12V: min. 1A, max. 24A
    +5V SB: min. 0A, max. 0.5A
    Input Frequency 47 to 63Hz
    AC Input 90VAC @ 8AC ?264VAC @ 4AC with PFC
    Cooling fan
    Two (2) redundant cooling fan modules
    Environmental Specification
    Humidity 5% to 95% (non condensing ?operating and non-operating)
    Temperature Operating : 0º to 40ºC
    Non-operating : -20º to 60ºC
    Altitude Operating : sea level to 12,000 ft
    Non-operating : sea level to 20,000 ft
    Dimensions:
    Chassis without handles: 445W x 174.4H x 498D mm (17.5 x 6.87 x 19.6 inches)
    Chassis with handles 447W x 174.4H x 514D mm (17.6 x 6.87 x 20.2 inches)
    Package: 590W x 480H x 700D mm
    System weight (w/o drives):
    Net weight: 36.5kg
    Gross weight: 39.6kg


       ©2009 .StoreTech Systems Inc.All Rights Reserved. Privacy Policy