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Partners SurfRAID TRITON Mini User Manual

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Ultra320/SATA - Storage Systems
SurfRAID TRITON Mini User's Manual
Support - 800-550-3005

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Summary of Contents for Partners SurfRAID TRITON Mini

  • Page 1 Ultra320/SATA - Storage Systems SurfRAID TRITON Mini User’s Manual Support - 800-550-3005...
  • Page 2 Copyright Copyright© 2005 Partners Data Systems, Inc. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent.
  • Page 3 FCC Compliance Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in residential installations.

  • Page 4: About This Manual

    Introduction Introduces you to SurfRAID TRITON Mini’s features and general technol- ogy concepts. Chapter 2 Getting Started Helps user to identify parts of the SurfRAID TRITON Mini and prepare the hardware for configuration. Chapter 3 Configuring Quick Setup Provides a simple way to setup your SurfRAID TRITON Mini.

  • Page 5: Table Of Contents

    Connecting UPS....................2-10 Connecting to PC or Terminal................2-11 Chapter 3 Configuring Configuring through a Terminal................Configuring the SurfRAID TRITON Mini Using the LCD Panel......Menu Diagram....................... 3-10 Web browser-based Remote RAID management via R-Link ethernet..3-15 Quick Create..................... 3-17 RAID Set Functions..................
  • Page 6 3.6.4 Activate Incomplete RAID Set..............3-22 3.6.5 Create Hot Spare..................3-24 3.6.6 Delete Hot Spare..................3-24 3.6.7 Rescue RAID Set..................3-25 Volume Set Function..................3-26 3.7.1 Create Volume Set..................3-26 3.7.2 Delete Volume Set..................3-29 3.7.3 Modify Volume Set..................3-30 3.7.3.1 Volume Expansion...............

  • Page 8: Chapter 1 Introduction

    RAID array. If a disk in the RAID array fails, the SurfRAID TRITON Mini con- tinues to function without any risk of data loss. This is because redundant information is stored separately from the data.

  • Page 9: Key Features

    1.1 Key Features SurfRAID TRITON Mini Features: Features an Intel 80321 64 bit RISC I/O processor 128MB cache memory Ultra 320 SCSI LVD host port Supports up to four (4) 1" hot-swappable Serial ATA II hard drives 250W power supply with PFC...

  • Page 10: Raid Concepts

    1.2 RAID Concepts RAID Fundamentals The basic idea of RAID (Redundant Array of Independent Disks) is to combine multiple inexpensive disk drives into an array of disk drives to obtain performance, capacity and reliability that exceeds that of a single large drive. The array of drives appears to the host computer as a single logical drive.
  • Page 11 By striping the drives in the array with stripes large enough so that each record falls entirely within one stripe, most records can be evenly distributed across all drives. This keeps all drives in the array busy during heavy load situations. This situation allows all drives to work concurrently on different I/O operations, and thus maximize the number of simultaneous I/O operations that can be performed by the array.
  • Page 12 RAID 1 , also known as disk mirroring, is simply a pair of disk drives that store duplicate data but appear to the computer as a single drive. Although striping is not used within a single mirrored drive pair, multiple RAID 1 arrays can be striped together to create a single large array consisting of pairs of mirrored drives.
  • Page 13 RAID 3 sector-stripes data across groups of drives, but one drive in the group is dedicated to storing parity information. RAID 3 relies on the embedded ECC in each sector for error detection. In the case of drive failure, data recovery is accomplished by calculating the exclusive OR (XOR) of the information recorded on the remaining drives.
  • Page 14 RAID 5 Under parity information is distributed across all the drives. Since there is no dedicated parity drive, all drives contain data and read operations can be overlapped on every drive in the array. Write operations will typically access one data drive and one parity drive.
  • Page 15 Dual-level RAID achieves a balance between the increased data availability inherent in RAID 1 and RAID 5 and the increased read performance inherent in RAID 0+1 disk striping (RAID 0). These arrays are sometimes referred to as RAID 10 and RAID 0+5 or RAID 50. In summary: RAID 0 is the fastest and most efficient array type but offers no fault- tolerance.

  • Page 16: Raid Management

    RAID Management The SurfRAID TRITON Mini can implement several different levels of RAID technology. RAID levels supported by the SurfRAID TRITON Mini are shown below. RAID Description Drives Level Block striping is provide, which yields higher performance than with individual drives. There is no redundancy.

  • Page 17: Scsi Concepts

    Refer to the documentation that came with your peripheral device to deter- mine the ID and how to change it. The SurfRAID TRITON Mini must be assigned a unique SCSI ID ranging from 0 to 15. The default value is ID 0.

  • Page 18: Terminators

    1.3.3 Terminators Based on SCSI specifications, the SCSI bus must be terminated at both ends, meaning the devices that are connected to the ends of the SCSI bus must have their bus terminators enabled. Devices connected in the middle of the SCSI bus must have their terminators disabled.

  • Page 19: Array Definition

    1.4 Array Definition 1.4.1 RAID Set A RAID Set is a group of disks containing one or more Volume Sets. It is impossible to have multiple RAID Sets on the same disks. A Volume Set must be created either on an existing RAID Set or on a group of available individual disks (disks that are not yet a part of an RAID Set).

  • Page 20: Easy Of Use Features

    1.4.3.2 Array Roaming The SurfRAID TRITON Mini stores configuration information both in NVRAM and on the disk drives It can protect the configuration settings in the case of a disk drive or controller failure. Array roaming allows the administrators the ability to move a complete RAID Set to another system without losing RAID configuration and data on that RAID Set.
  • Page 21 RAID Set. The unused capacity can create additional Volume Set. The expansion process is illustrated as following figure. The SurfRAID TRITON Mini controller redistributes the original Volume Set over the original and newly added disks, using the same fault-tolerance con- figuration.

  • Page 22: High Availability

    SurfRAID TRITON Mini. For example, in a system using two drives in RAID level 1, you could add capacity and retain fault tolerance by adding one drive.
  • Page 23 1.4.4.2 Hot-Swap Disk Drive Support The SurfRAID TRITON Mini has a protection circuit to support the replace- ment of hard disk drives without having to shut down or reboot the system. The removable hard drive tray allows a “hot swappable,” fault-tolerant RAID solution at price much less than that of conventional SCSI hard disk RAID systems.

  • Page 24: Chapter 2 Getting Started

    -Power on the SurfRAID TRITON Mini. 2.1 Unpacking the SurfRAID TRITON Mini Unpack the SurfRAID TRITON Mini and verify that the contents of the ship- ping carton are all there and in good condition. Before removing the SurfRAID TRITON Mini from the shipping carton, visually inspect the physical condition of the shipping carton.
  • Page 25 • SurfRAID TRITON Mini unit • One power cord • One external null modem cable • One external UPS cable • One RJ-45 ethernet cable • Installation Reference Guide Getting Started...

  • Page 26: Identifying Parts Of The Surfraid Triton Mini

    2.2 Identifying Parts of the SurfRAID TRITON Mini The illustrations below identify the various features of the SurfRAID TRITON Mini. Get yourself familiar with these terms as it will help you when you read further in the following sections. 2.2.1 Front View...

  • Page 27: Front Panel

    Up and Down on the LCD screen. This is also used to move between each arrow buttons menu when you configure the SurfRAID TRITON Mini. This is used to enter the option you have selected. Select button Press this button to return to the previous menu.

  • Page 28: Rear View

    Power supply AC power input socket 1. Host Channel A The SurfRAID TRITON Mini is equipped with one host channel. It has two 68- pin SCSI connectors at the rear for SCSI in and out. 2. Uninterrupted Power Supply (UPS) Port The SurfRAID TRITON Mini comes with a UPS port allowing you to connect a UPS device.

  • Page 29: Connecting To Host

    The SurfRAID TRITON Mini supports the Ultra 320 SCSI LVD interface which provides fast 320MB/S data transfer rates using a 16-bit SCSI bus. Installa- tion of the SurfRAID TRITON Mini is very similar to the installation of a stan- dard SCSI drive. The SCSI connector accepts the standard 68-pin LVD SCSI connector used on most LVD SCSI devices.

  • Page 30: Scsi Termination

    These connectors are used in one of two ways: If the SurfRAID TRITON Mini is the only external SCSI device, or is the last external device in a daisy-chained configuration, connect the incom- ing cable (the one which is attached to the SCSI adapter) to the Host A in connector and install the external SCSI Terminator on the Host A out connector.

  • Page 31: Install Hard Drives

    2.5 Install Hard Drives This section describes the physical locations of the hard drives supported by the SurfRAID TRITON Mini and gives instructions on installing a hard drive. The SurfRAID TRITON Mini supports hot-swapping allowing you to install or replace a hard drive while the SurfRAID TRITON Mini is running.

  • Page 32: Powering-On The Surfraid Triton Mini

    2.6 Powering-on the SurfRAID TRITON Mini When you connect the SurfRAID TRITON Mini to the server, you should press the ON/OFF Power Supply Switch. It will turn the SurfRAID TRITON Mini on and the Self-Test will be started automatically. Plug in the power cord to the power connector located at the rear of the SurfRAID TRITON Mini.
  • Page 33 Connecting an Uninterrupted Power Supply (UPS) The SurfRAID TRITON Mini is equipped with a UPS port located at the rear of the system unit. It allows you to connect a UPS fail signal. port Description Not used UPS Line Fail...

  • Page 34: Connecting To Pc Or Terminal

    2.8 Connecting to a PC or Terminal The SurfRAID TRITON Mini is equipped with a serial monitor port located at the rear of the system unit. This serves as an alternative display when ac- cessing the setup utility. Monitor port...

  • Page 35: Chapter 3 Configuring

    • Web browser-based Remote RAID management via the R-Link ethernet port Important: The SurfRAID TRITON Mini allows you to access the utility using only one method at a time. Configuring through a Terminal Configuring through a terminal will allow you to use the same configuration options and functions that are available from the LCD panel.
  • Page 36 SurfRAID TRITON Mini. Note: You may connect a terminal while the SurfRAID TRITON Mini’s power is on. Power-on the terminal. Run the VT100 program or an equivalent terminal program. Configuring...
  • Page 37 The default setting of the monitor port is 115200 baud rate, 8 data bit, non-parity, 1 stop bit and no flow control. Configuring...
  • Page 38 Click disconnect button. Open the File menu, and then open Properties. Configuring...
  • Page 39 Open the Settings Tab. Open the Settings Tab. Function, arrow and ctrl keys act as: Terminal Keys, Backspace key sends: Crtl+H, Emulation: VT100, Telnet terminal: VT100, Back scroll buffer lines: 500. Click OK. Configuring...
  • Page 40 Now, the VT100 is ready to use. After you have finished the VT100 Ter- minal setup, you may press “ X “ key (in your Terminal) to link the Sur- fRAID TRITON Mini and Terminal together. Press “X’ key to display the Monitor Utility screen on your VT100 Terminal.
  • Page 41 The password is used to protect from unauthorized entry. The controller will check the password only when entering the Main menu from the initial screen. The SurfRAID TRITON Mini will au- tomatically go back to the initial screen when it does not receive a command in twenty seconds.
  • Page 42 VT100 terminal configuration Utility Main Menu Options Select an option and the related information or submenu items display be- neath it. The submenus for each item are explained on the section 3.3. The configuration utility main menu options are: Option Description Quick Volume and RAID Set Create a RAID configuration that con-...

  • Page 43: Configuring The Surfraid Triton Mini Using The Lcd Panel

    LCD Panel The LCD Display front panel function keys are the primary user interface for the SurfRAID TRITON Mini. Except for the “Firmware update” ,all configura- tion can be performed through this interface.The LCD provides a system of screens with areas for information, status indication, or menus. The LCD screen displays up to two lines at a time of menu items or other information.

  • Page 44: Menu Diagram

    Menu Diagram The following tree diagram is a summary of the various configuration and setting functions that can be accessed through the LCD panel menus or the terminal monitor. Configuring 3-10...
  • Page 45 3-11 Configuring...
  • Page 46 Configuring 3-12...
  • Page 47 3-13 Configuring...
  • Page 48 Configuring 3-14...

  • Page 49: Web Browser-Based Remote Raid Management Via R-Link Ethernet

    Browser-based Remote RAID management can be used to configure and man- age all the RAID functions. To configure the SurfRAID TRITON Mini on a remote machine, you need to know its IP Address. Launch your web browser by entering http://[IP Address] in the remote web browser.
  • Page 50 Main Menu The main menu shows all functions that enable the user to execute actions by clicking on the appropriate links. Description Individual Category Create a RAID configuration that consists of the Quick Create number of physical disks installed; It can modify the Volume Set Capacity, RAID Level, and Stripe Size.

  • Page 51: Quick Create

    Below are a few practical examples of concrete configuration procedures. Quick Create The number of physical drives in the SurfRAID TRITON Mini determines the RAID levels that can be implemented with the RAID Set. You can create a RAID Set associated with exactly one Volume Set. The user can change the RAID Level, Capacity, Volume Initialization Mode and Stripe Size .

  • Page 52: Raid Set Functions

    Set for the first time or to delete an existing RAID Set and reconfigure the RAID Set. A RAID Set is a group of disks containing one or more Volume Sets. With the SurfRAID TRITON Mini, four RAID Sets can be created. 3.6.1 Create RAID Set To create a RAID Set, click on the Create RAID Set link.

  • Page 53: Delete Raid Set

    3.6.2 Delete RAID Set To delete a RAID Set, click on the Delete RAID Set link. A “Select The RAID SET To Delete” screen is displayed showing all RAID Sets existing in the current con- troller. Click the RAID Set number you wish to delete in the “Select Column To Delete”...

  • Page 54: Expand Raid Set

    3.6.3 Expand RAID Set Use this option to expand a RAID Set, when a disk is added to your system. This function is active when at least one drive is available. To expand a RAID Set, click on the Expand RAID Set link. Select the target RAID Set, which you want to expand.
  • Page 55 Migrating occurs when a disk is added to a RAID Set. Migration status is displayed in the RAID status section of the RAID Set information area when a disk is added to a RAID Set. Migration status is also displayed in the associ- ated Volume Status section of the Volume Set information area when a disk is added to a RAID Set.

  • Page 56: Activate Incomplete Raid Set

    3.6.4 Activate Incomplete RAID Set When one of the disk drives is removed in power-off state, the RAID Set status will change to “Incomplete State”. When the SurfRAID TRITON Mini is powered on again. The RAID Set can be activated using the “Activate RAID Set”...
  • Page 57 Click on the Submit button to activate the RAID Set that has had a disk removed in a power-off state. The SurfRAID TRITON Mini will continue to work in degraded mode. 3-23 Configuring...

  • Page 58: Create Hot Spare

    3.6.5 Create Hot Spare When you choose the Create Hot Spare option in the RAID Set Function, all unused physical devices connected to the current controller appear: Select the target disk by clicking on the appropriate check box. Click on Confirm The Operation, and click on the Submit button to create the hot spares.
  • Page 59 3.6.7 Rescue RAID Set If you need to Rescue Missing RAID Set, please contact our engineer for assistance. 3-25 Configuring...

  • Page 60: Create Volume Set

    3.7 Volume Set Function A Volume Set is seen by the host system as a single logical device. It is organized in a RAID level with one or more physical disks. RAID level refers to the level of data performance and protection of a Volume Set. A Volume Set capacity can consume all or a portion of the disk capacity available in a RAID Set.
  • Page 61 Volume Name: The default volume name will always appear as Volume Set #. You can rename the Volume Set name providing it does not exceed the 15 character limit. RAID Level: Set the RAID level for the Volume Set. Highlight RAID Level and press Enter. The available RAID levels for the current Volume Set are displayed.
  • Page 62 Disable this function only when using older SCSI drives that do not support command tag queuing Max SCSI Speed: The SurfRAID TRITON Mini supports 320 MB/sec as the highest data transfer rate. SCSI Channel/SCSI ID/SCSI Lun: SCSI Channel: The SurfRAID TRITON Mini supports one SCSI Channel.
  • Page 63 3.7.2 Delete Volume Set To delete a Volume Set from the RAID Set system function, move the cursor to the main menu and click on the Delete Volume Set link. The Select The Volume Set To Delete screen will show all RAID Set numbers. Click on a RAID Set number and Confirm The Operation and then click on the Submit button to show all Volume Set items in the selected RAID Set.

  • Page 64: Modify Volume Set

    3.7.3 Modify Volume Set To modify a Volume Set from a RAID Set: (1). Click on the Modify Volume Set link. (2). Click on the Volume Set from the list that you wish to modify. Click on the Submit button. The following screen appears.
  • Page 65 3-31 Configuring...
  • Page 66 3.7.4 Volume Set Migration Migration occurs when a Volume Set is migrated from one RAID level to an- other, a Volume Set strip size changes, or when a disk is added to a RAID Set. Migration status is displayed in the Volume Status area of the RAID Set Hierarchy screen when one RAID level is migrated to another, a Volume Set stripe size changes or when a disk is added to a RAID Set.
  • Page 67 3.7.5 Check Volume Set To check a Volume Set from a RAID Set: (1). Click on the Check Volume Set link. (2). Click the Volume Set that you wish to check. Click on Confirm The Op- eration and click on the Submit button. Use this option to verify the correctness of the redundant data in a Volume Set.

  • Page 68: Create Pass-Through Disk

    To create pass-through disk, move the cursor to the main menu and click on the Create Pass-Through link. The relative setting function screen appears. Disks are not controlled by the SurfRAID TRITON Mini firmware and thus cannot be a part of a Volume Set. The disk is available to the operating sys- tem as an individual disk.
  • Page 69 3.8.2 Modify Pass-Through Disk Use this option to modify the Pass-Through Disk Attribute. The user can modify the Cache Mode, Tagged Command Queuing, Max SCSI Speed and SCSI Channel/ID/LUN on an existing pass through disk. To modify the pass-through drive attribute from the pass-through drive pool, move the cursor to click on Modify Pass-Through link.

  • Page 70: Delete Pass-Through Disk

    3.8.3 Delete Pass-Through Disk To delete pass-through drive from the pass-through drive pool, move the cur- sor to the main menu and click on Delete Pass Through link. After you complete the selection, Click on Confirm The Operation and click on the Submit button to complete the delete action.

  • Page 71: System Configuration

    RAID Rebuild Priority: The RAID Rebuild Priority is a relative indication of how much time the con- troller devotes to a rebuild operation. The SurfRAID TRITON Mini allows the user to choose the rebuild priority (ultraLow, Low, Medium, High) to balance Volume Set access and rebuild tasks appropriately.
  • Page 72 SurfRAID TRITON Mini allows user to choose the SATA Mode: SATA150, SATA150+NCQ, SATA300, SATA300+NCQ. Disk Capacity Truncation Mode: This SurfRAID TRITON Mini uses drive truncation so that drives from differing vendors are more likely to be able to be used as spares for each other.
  • Page 73 3.9.2 U320 SCSI Target Config To use the U320 SCSI Target function, move the cursor bar to the main menu and click on the U320 SCSI Target Config. The Enabled option sup- ports Quick Arbitration and Selection (QAS). QAS reduces the overhead of control release on the SCSI bus from one device to another.
  • Page 74 3.9.3 EtherNet Config To set the EtherNet function, move the cursor to the main menu and click on EtherNet Config. The RAID System EtherNet Function menu will show all items. Select the desired function. Configuring 3-40...
  • Page 75 3.9.4 Alert By Mail Config To set the Event Notification function, move the cursor to the main menu and click on Alert By Mail Config. The RAID System Event Notification Function menu will show all items. Select the desired function. When an abnormal condi- tion occurs, an error message will be emailed to the administrator that a problem has occurred.

  • Page 76: Snmp Configuration

    3.9.5 SNMP Configuration The SNMP gives users independence from the proprietary network management schemes of some manufacturers. SNMP is supported by many WAN and LAN manufacturers enabling true LAN/ WAN management integration. To set the SNMP function, move the cursor to the main menu and click on SNMP Configuration.

  • Page 77: View Events

    Submit button to complete the action. 3.9.6 View Events To view the SurfRAID TRITON Mini controller’s information, move the cursor to the main menu and click on the System Information link. The SurfRAID TRITON Mini Events Information screen appears.

  • Page 78: Generate Test Events

    3.9.7 Generate Test Events If you want to generate test events, move the cursor to the main menu and click on Generate Test Events. Click on Confirm The Operation, and click on the Submit button to create the hot spares. Then click on the View Events/Mute Beeper to view the test event.

  • Page 79: Modify Password

    Use this feature to clear the entire events buffer information. 3.9.9 Modify Password To set or change the SurfRAID TRITON Mini password, move the cursor to the RAID System Function screen, and click on the Change Password link. The Modify System Password screen appears.

  • Page 80: Upgrade Firmware

    The password option allows the user to set or clear the SurfRAID TRITON Mini’s password protection feature. Once the password has been set, the user can only monitor and configure the SurfRAID TRITON Mini by providing the correct password. The password is used to protect the SurfRAID TRITON Mini from unautho- rized entry.

  • Page 81: Information Menu

    3.10 Information Menu 3.10.1 RAIDSet Hierarchy Use this feature to view the SurfRAID TRITON Mini current RAID Set, current Volume Set and Physical Disk Configuration. To view the RAID Set information, move the cursor to the right column and click on the RAID Set # link.
  • Page 82 To view the disk information, move the cursor to the right column and click on the CH # link. The Disk Information screen appears. The SMART Attribute(Threshold) Is A Normalized Value, The Value Is The Larger The Better. If The Attribute Value Is Smaller Than The Threshold Value, The Disk Is In Unstable State.

  • Page 83: System Information

    3.10.2 System Information To view the SurfRAID TRITON Mini controller’s information, move the cursor to the main menu and click on the System Information link. The SurfRAID TRITON Mini Information screen appears. Use this feature to view the SurfRAID TRITON Mini controller’s information. The controller name, firmware version, serial number, main processor, CPU data/ Instruction cache size and system memory size/speed appear on this screen.
  • Page 84 Hardware Information screen appears. The Hardware Monitor Information provides the temperature, fan speed (chassis fan) and voltage of the SurfRAID TRITON Mini. All items are also unchangeable. The warning messages will indicate through the LCD, LED and alarm buzzer. Item...
  • Page 85 3.11 Creating a New RAID or Reconfiguring an Exist- ing RAID You can configure RAID Sets and Volume Sets using Quick Create or RAID Set Functions/Volume Set Functions configuration method. Each configu- ration method requires a different level of user input. The general flow of op- erations for RAID Set and Volume Set configuration is: Step Action...

  • Page 86: Upgrading The Firmware

    4.1 Upgrading the Firmware Upgrading Flash Firmware Programming Utility Since the SurfRAID TRITON Mini controller features flash firmware, it is not nec- essary to change the hardware flash chip in order to upgrade the RAID firmware. The user can simply re-program the old firmware through the RS-232 port. New releases of the firmware are available in the form of a DOS.
  • Page 87 Upgrading Firmware Through ANSI/VT-100 Terminal Emulation Get the new version firmware for your SurfRAID TRITON Mini controller. For Ex- ample, download the bin file fromwww.PartnersData.com onto the c: 1. From the Main Menu, scroll down to “RAID System Function”...
  • Page 88 3. Go to the tool bar and select Transfer. Open Send File. 4. Select “ZMODEM modem” under Protocol. ZMODEM as the file transfer proto- col of your terminal emulation software. 5. Click Browse. Look in the location where the Firmware upgrade software is located.
  • Page 89 6. Click Send. Send the Firmware Binary to the controller 7. When the Firmware completes downloading, the confirmation screen appears. Press Yes to start programming the flash ROM. Array Maintenance...
  • Page 90 8. When the Flash programming starts, a bar indicator will show “ Start Updating Firmware. Please Wait:”. 9. The Firmware upgrade will take approximately thirty seconds to complete. 10. After the Firmware upgrade is complete, a bar indicator will show “ Firmware Has Been Updated Successfully”.
  • Page 91 Upgrading Firmware Through Web Browser Management Get the new version firmware for your SurfRAID TRITON Mini controller. 1. To upgrade the SurfRAID TRITON Mini firmware, move the cursor to Upgrade Firmware link. The Upgrade The Raid System Firmware screen appears.
  • Page 92 5. After the firmware upgrade is complete, a bar indicator will show “ Firmware Has Been Updated Successfully” Array Maintenance...

  • Page 93: Appendix A Technical Specification

    Appendix A Technical Specification RAID processor Intel 80321 RISC 64-bit RAID level 0, 1, 3, 5, 0+1 and JBOD Cache memory 128MB DDR SDRAM on board No. of channels (host+disk) Host bus interface Ultra 320 SCSI LVD Data transfer Up to 320MB / sec Back Plane Board S-ATA II Hot swap disk bays...

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