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A16U-G2430 RAID Subsystem
Desktop RAID Solutions
ES A08S-C2131-M2
ES A08S-C2132-M2

Rackmount RAID Solutions
Fibre Channel
easyRAID Q16PS-F4R3
easyRAID Q12PS-F4R3

easyRAID Q16PS-S3R3
easyRAID Q12PS-S3R3

easyRAID Q16JS-S2R3

Fibre Channel
easyRAID Q16+F2R3
easyRAID Q12+F2R2

easyRAID Q24P2-U4R4
easyRAID Q16+U4R3
easyRAID Q16+U4R2

RAID Subsystems

A-12E-G-2121 RAID


3U Profile, 16 drive
Dual SCSI-320 Host Channels tosATA-II RAID Subsystem

Designed using a custom ASIC400 as a dedicated XOR engine, the AV-STOR A16U-G provide ample margins for flexible load-balancing and multi-pathing algorithms. Providing a twofold performance increase, the dedicated ASIC architecture frees the PowerPC CPU of XOR computing load and features abundant bandwidth sufficient for the subsystem's various data protection procedures with minimum disturbance to host access.

Available models
AV-A16U-G2430-1000 Single Controller SCSI 320 x 2 16 x 1000GB Seagate SATA
AV-A16U-G2430-750 Single Controlle SCSI-320 x 2 16 x 750GB Seagate SATA
AV-A16U-G2430-500 Single Controller SCSI-320 x 2 16 x 500GB Seagate SATA
AV-A16U-G2430-400 Single Controller SCSI-320 x 2 16 x 400GB Seagate SATA
AV-A16U-G2430-250 Single Controller SCSI-320 x 2 16 x 250GB Seagate SATA

The subsystem provides two SCSI-320 host channels with 16 drive bays for SATA-II disk drives in a smartly managed enclosure. The subsystem combines massive storage capacity with SATA-II benefits, such as high performance and dedicated bandwidth, in a safe environment where the highest level of data availability is assured. High throughput is available by segregating I/O traffic across the separate PCI-X buses, while IOPS performance is delivered through the internal buffer on the XOR engine and CPU with the help of intelligent firmware algorithms.

AV-STOR's RAID functionality is unmatched in the industry in terms of its wide variety of array configuration, maintenance, and monitoring capabilities. The SCSI-to-SATA series provides IT professionals with versatile options to meet their needs.

  • Two (2) SCSI-320 host channels; transfer rate up to 320MBps per channel
  • Market leading I/O performance
    • Sustained RAID5 Read/Write at 566/484 MB/sec.
    • Sustained RAID6 Read/Write at 566/426 MB/sec
  • Single RAID controller providing complete RAID functionality
  • Designed to use 3Gbps SATA-II disk drives; backward compatible with SATA-I disk drives
  • Modular, passive backplane, high redundancy enclosure design
  • High density 3U chassis providing up to 8TB of storage capacity
  • Optional, hot-swappable battery backup units (BBU)
  • Dual-speed cooling fans to reduce system noise
  • DDR cache memory up to 2GB
  • SATA NCQ support
  • Real-time event notification by a variety of Methods
  • Hardware provider interface ready for third-party management software that supports Windows Server 2003 Virtual Disk Service(VDS)


The subsystem supports a complete list of RAID configuration levels in the forms of logical drives, logical volumes and logical partitions. Multiple RAID configurations can co-exist within one enclosure, each with distinct write policy, stripe size, and optimisation modes. Hot rebuild and numerous fault correction mechanisms ensure the highest standard of RAID protection.

Safe distribution of data is embodied in many ingenious fault-preventive designs. From memory ECC, write-verify, parity regeneration, parity update tracking, Media Scan, to battery backup protection, your data is warded against factors that might cause data inconsistencies. For example, the subsystem is capable of managing storage arrays with fault containment algorithms. If a critical component fails, e.g., a battery module, the subsystem automatically disables its write-back caching and assumes the conservative writethrough mode. Algorithms like this guarantees that data is reliably managed and all risk factors are always carefully checked.


The A16U subsystem is equipped with field-hardened technologies that ensure data protection and a simple, centralised management.

The subsystems are managed by firmware developed with sophisticated RAID technologies and redundant component designs. Incorporating various data protection algorithms and featuring RAID levels 0, 1(0+1), 3, 5, 6, 10, 30, 50 and 60 the subsystem actually offers capabilities only seen in enterprise-class solutions.

To ensure a high level of system availability, critical components such as disk drives, power supplies, and cooling fans, are all redundant and hotswappable. Modules are integrated with the main signal path PCB via board-to-board or interface specific connectors to eliminate points of failure.

Assisted by GUI management software, the operating status of all components can be constantly monitored through a local or remote console.


All critical modules are housed in their own removable canister, including hard disk drives, power supplies, battery modules, and cooling fans. In the event of component failure, each can be replaced within seconds. Spring screws, securing latches, and key-locks all help provide easier access to the modules.

A variety of configuration and monitoring methods are available, either locally via the LCD keypad panel and the text-mode RS-232C terminal utility, or remotely through the Java-based GUI manager. All fault conditions, including module failure and abnormal voltage and temperature readings, are instantly reported. A system administrator can choose to be notified via LAN broadcast, SNMP traps, email, fax, SMS, ICQ, and MSN messenger when he is away from the installation site. Even the notification utility can be installed redundantly on two different machines to avoid the chance of blind time due to a simple component failure.

Intelligent Drive Handling
  • Media Scan: repairs data stored on bad drive sectors from adjacent stripes
  • Task Scheduler: hands free, pre scheduled Media Scan operation on disk drives
  • Replaces or clones drives showing SMART detected defects
  • Manually clones of disk drives showing defects
  • Verifies data after normal writes, rebuild writes, or Logical Drive initialisation
Adaptive Write Policy (Write-back/Write-through)
  • Optimises writes performance on receiving sequential write requests using the Write-through mode and temporarily disables synchronised cache communications
  • Automatically switches policry to adapt to random or sequential I/O requests
Guaranteed Latency I/O
  • Designed for "no drop-frame" applications such as video streaming
  • Fast return of read requests by generating data from adjacent stripes when a drive fails or bad sectors cause delays

Major Markets and Uses

Avante Digital products are used in server-attached and networked data storage in major industries such as medical imaging, multimedia on demand (MOD), and digital media including video-on-demand, stream editing and more

Subsystem Characteristics
High Availability
400Mhz RISC CPU, 256KB L2 Cache
Redundant, hot swappable FRU's
ASIC 266 RAID Engine
Susbstem self diagnostics
Single Controller
Independent host I/O modules
256MB cache memory (upgradable to 2GB)
Independent expansion I/O Modules
Optional Battery Backup Module
Battery backup unit (Optional)
UPS status detections
Hot-spare disk drives
LCD keypad panel
Cluster ready
COM ports per controller
10/100 Ethernet port per controller
Management Software
Diagnotics LEDs on all FRUs
Java GUI Software
Termianl via RS-232C
Drive Interface
Telnet over Ethernet
Number of disk trays
LCD keypad panel
SATA-II (backward compatible to SATA-I)
Event notification methods
Host Connection ports
VHDCI SCSI-320 Ports
   LAN broadcast
Data single channel bandwidth
   SNMP traps
Tag command queuing Yes    Cell phone message Yes
Multiple target IDs Yes    Instant messages Yes
Raid configuration OS Support
RAID levels 0, 1(0+1), 3, 5, 6 10, 30, 50, 60 JBOD Microsoft Windows NT
Max 16 logical drives Microsoft Windows 2000 Server
Microsoft Windows 2003 Server
Multiple array configurations Sun Solaris ver 8/9/10
Automatic background rebuild SGI IRIX >6.5.7
Smart technologies Mac OS-X 10.2, 10.3, 10.4
Linux (2.4 & 2.6 Kernels)
AC Input Dimensions
240VAC at 5A; 100VAC at 10A with PFC 2U, 19 inch rackmount chassis
(auto switching) Without handles:
Relative Humidity: 445(w) x 88(h) x 490(d)
5 to 95% non-condensing With handles:
Operating Temperature: 482.6(w) x 88(h) x 505(d)
0 to 40 degrees centigrade

(c) Avante Digital Limited 2010 - All trademarks acknowledged - Page last updated Sunday, February 17, 2008