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Accusys ACS-8990 User Manual

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Summary of Contents for Accusys ACS-8990

  • Page 3: Preface

    All contents of this manual are copyrighted by Accusys, Inc. The information contained herein is the exclusive property of Accusys, Inc. and shall not be copied, transferred, photocopied, translated on paper, film, electronic media, or computer-readable form, or otherwise reproduced in any way, without the express written permission of Accusys Inc.

  • Page 4: Regulatory Information

    ACS-8990/89200/89230 User’s Manual Regulatory information For Europe This drive is in conformity with the EMC directive. Federal Communications Commission (FCC) 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.

  • Page 5: About This Manual

    About this manual Intended user This manual is designed and written for users of the ACS-8990, ACS-89200 and ACS-89230 RAID controllers. These models are very similar, differing only in certain components and the software support disk. The user should ideally be familiar with RAID planning and data storage operations and have experience in electronic or computer engineering.

  • Page 6: Using This Manual

    This manual covers three models: ACS-8990, ACS-89200 and ACS-89230. Where references are made to ACS-8990, they should be taken as applying to all three models. The three models differ in the maximum number of hard disks they support:: ACS-8990 –...

  • Page 7: Guide To Conventions

    Related documents for reference ACSView/AccuSet User’s Manual: A guide to the GUI applications designed for use with Accusys 8 series and 9 series RAID controllers. The applications serve as handy and effective tools for remote, cross-platform monitoring and control of RAID controllers.

  • Page 8: Table Of Contents

    Automatic Global Hot Spare................15 Automatic Drive Rebuild..................15 Instant Remote Notification ................15 UPS Support ...................... 15 ....................15 EFORE YOU BEGIN What’s in the box ....................15 ACS-8990 SCSI-SATA package ................. 15 ACS-8990 FC-to-SATA package ................ 16 What else you need..................... 16...
  • Page 9 Table of Contents RAID ........17 AMILIARIZING YOURSELF WITH THE CONTROLLER Overview ......................17 Control Panel..................... 18 Rear view ......................18 .................... 19 UPPLIED ACCESSORIES 3-in-1 Combo Cable................... 19 RS232 Connection for VT-100/ANSI Terminal-Emulation ........ 19 Default Serial Port Settings ................19 Modem Connection ....................
  • Page 10 System configuration..................40 RAID configuration – simple ................41 RAID configuration – standard................41 RAID configuration – advanced ................ 42 How to configure ACS-8990 ................43 ..............44 INDING YOUR WAY AROUND THE MENUS ..................45 CCESSING THE MAIN MENU Accessing the main menu using Monitor Utility ..........
  • Page 11 Table of Contents Company Info menu ................... 63 ....................63 ODEM SETTINGS Modem Init St menu ................... 63 ..................64 AVING CONFIGURATIONS NVRAM menu ....................64 ....................65 DVANCED SETTINGS RAID Functions menu..................65 APPENDIX A - TROUBLESHOOTING ........73 APPENDIX B - INTRODUCTION TO RAID LEVELS...
  • Page 12 ACS-8990/89200/89230 User’s Manual Pager information....................98 IO statistics ......................98 Battery Backup Module information..............98 APPENDIX H - UPDATING THE FIRMWARE ...... 99 APPENDIX I - CONTACT US ..........101 ......................101 CCUSYS U.S.A., I .................... 101 CCUSYS ....................

  • Page 13: Chapter 1 - Introduction

    ACS-8990 is designed for easy integration, smooth data expansion and server migration. ACS-8990 is the ultimate flexible RAID solution. It can manage seven different RAID levels , plus JBOD, NRAID, providing functions including Striping (RAID 0)

  • Page 14: Key Features

    ACS-8990/89200/89230 User’s Manual This manual covers three models: ACS-8990, ACS-89200 and ACS-89230. Where references are made to ACS-8990, they should be taken as applying to all three models. The three models differ in the maximum number of hard disks they support:: ACS-8990 –...

  • Page 15: Serial Ata Compatible

    To ensure flawless operation, ACS-8990 has a built-in self-diagnostic utility. Self-diagnostic Mode is entered automatically upon power up, or after the ACS-8990 has been reset. In this mode, all components are tested, and any potential problems are reported. Once the tests are complete, ACS-8990 switches automatically to Operation Mode.

  • Page 16: Operation Mode

    Hot Swapping allows for the removal and installation of disk drives without interruption of data access while the ACS-8990 system is in use. This is usually performed when there is no Hot Spare drive configured. There is no need to power down the system.

  • Page 17: Automatic Global Hot Spare

    UPS Support ACS-8990 supports the use of an uninterruptible power supply. In the event of a power breakdown, a UPS will keep the RAID controller online long enough for its internal cache memory to be saved to a hard drive.

  • Page 18: Acs-8990 Fc-To-Sata Package

    ACS-8990/89200/89230 User’s Manual ACS-8990 FC-to-SATA package ACS-8990 Controller Box ×1 with: – ACS-8990 controller – ACS-7145 daughter board – ACS-5160 bridge board – ACS-8961 Backplane – Panel module – 10 pin panel cable & LCD cable ACS-8990 Controller User’s Manual ×1 Serial ATA cable x 16 3-in-1 Combo Cable ×1...

  • Page 19: Familiarizing Yourself With The Raid Controller

    File servers, with multiple random access of varying file size, generally have little or no performance improvement with additional cache. ACS-8990 disk arrays do not require the installation of different drivers for use with different operating systems. ACS-8990 is independent and transparent to the host operating system.

  • Page 20: Control Panel

    ACS-8990/89200/89230 User’s Manual Control Panel The two-line, 16-character LCD displays the status configuration information ACS-8990. The Scroll buttons are used to scroll through screens and highlight menu items The Enter button is used to select an option The Escape button is used to cancel a...

  • Page 21: Supplied Accessories

    The baud rate can be changed using the interface on the front panel. Modem Connection ACS-8990 can be connected to a modem to allow remote notification in the event of an error. If a modem is properly connected to the modem header of the combo cable, you can configure the ACS-8990 to notify the administrator in case of malfunction.

  • Page 22: Ups Connection

    UPS will take over and assure sustained operation for a certain period of time. A UPS connected to the ACS-8990 will keep the controller box running. You still need to ensure that the system of which the ACS-8990 also has a separate sufficient backup power solution. In order to protect the continuous operation of the ACS-8990 and all disks connected, you need to ensure that the power supplied by the UPS suffices the demand.

  • Page 23: Chapter 2 - Installation

    Instructions on how to install and upgrade DRAM Instructions on cabling Installation flowchart Installation of ACS-8990 is simple. This chapter will lead you though the following steps: Install minimum 64 MB SODIMM in the socket on the Install controller board...

  • Page 24: Pre-Installation Notices

    To avoid overheating, ACS-8990 should be installed in a well-ventilated area and in such a way that sufficient airflow is maintained across the controller chips.

  • Page 25: Hardware Configurations

    Chapter 2 – Installation Hardware configurations ACS-8990 is supplied in two configurations – with either a SCSI or a fibre host interface and a different daughterboard for each. Other components of the two configurations (controller board, backboard, control panel and controller box) and are identical.

  • Page 26: Changing Hardware Configurations

    ACS-8990/89200/89230 User’s Manual Changing hardware configurations Read the pre-installation notices earlier in this chapter before proceeding with installation. Most users should not need to replace components but users need to remove components to install or remove a DDR RAM module. Instructions on installing and removing DDR RAM are given separately in the next section.

  • Page 27: Removing / Replacing Control Panel

    Chapter 2 – Installation Removing / replacing control panel To remove the control panel: 1. Release the two latches securing the control panel to the controller box casing. 2. Ease the control panel forward out of the controller box. 3. Release the two control panel cables from the control panel.

  • Page 28: Removing / Replacing Backplane

    ACS-8990/89200/89230 User’s Manual Removing / replacing backplane To remove the backplane: 1. Remove the daughterboard (see previous section). 2. Remove two screws securing the rear of the controller board to the controller box casing. 3. Gently push the two sides of the controller box apart and ease out the backplane.

  • Page 29: Installing / Upgrading Sodimm

    Read the pre-installation notices earlier in this chapter before proceeding with installation. ACS-8990 is normally supplied without any on-board memory installed. The ACS-8990 controller requires a minimum 64 MB SODIMM installed in the socket on the controller board in order to operate.

  • Page 30: Architecture Of Supported Sodimm

    4 (16M bit x 16), 16 (8M bit x 8) 64 MB 4 (8M bit x 16), 8 (8M bit x 8) ACS-8990 supports both non-registered ECC memory (also known as non-buffer ECC memory) and non-ECC memory. Installing SODIMM To install a SODIMM, ensure the system power is off and disconnected. Then:...

  • Page 31: Host Connection

    Chapter 2 – Installation Host connection Read the pre-installation notices earlier in this chapter before proceeding with host connection. SCSI configuration Connect a SCSI cable from the host system SCSI card to one of the SCSI connectors on the daughter board and to an external terminator.

  • Page 32: Cabling

    ACS-8990/89200/89230 User’s Manual Cabling Read the pre-installation notices earlier in this chapter before proceeding with cabling. Ensure that each of the host systems is connected to the daughterboard as described in the previous section. Connect a serial ATA cable from each hard disk drive in the intended array to a connector on the backplane.

  • Page 33: Turning On For The First Time

    3. Turn to Chapter 5 to perform a full configuration using the control panel. Turning off The Shut Down command should be used to turn off ACS-8990 to ensure that data is not lost or corrupted. To shut down, first shut down the terminal/host system, then select Shut Down from the NVRAM menu (see Saving Configurations in Chapter 5, Configuration).

  • Page 34: Chapter 3 - Quick Setup

    Quick Setup cannot be used to reconfigure an existing array. To do this, turn to Chapter 5. This manual covers three models: ACS-8990, ACS-89200 and ACS-89230. Where references are made to ACS-8990, they should be taken as applying to all three models.

  • Page 35: Quick Setup With The Control Panel

    Chapter 3 – Quick setup Quick Setup with the control panel ACS-8990 1. Turn on ACS-8990. The controller will first enter Self-Diagnostic Mode, then Operation Mode. A typical Operation Mode screen is shown. ×××JJJ××××××××× Full explanation of the control panel messages is given in Appendix D.

  • Page 36: Quick Setup With The Monitor Utility

    Monitor Utility are given in Chapter 4. Users wishing to perform Quick Setup via the monitor utility must first establish a connection between the host terminal and ACS-8990. Follow the instructions in Chapter 5, Accessing the Monitor Utility. Then: 1.

  • Page 37: Chapter 4 - Accessing The Monitor Utility

    COM port before. A connection must then be established between the host computer and the ACS-8990 RAID controller. This is done by means of a terminal program, such as HyperTerminal. This section outlines the process to set up a HyperTerminal connection.
  • Page 38 3. The Connect to dialog box appears. Select COM1 or COM2 from the Connect using: dropdown menu, depending on which port is linked to ACS-8990. Click 4. The COM Properties dialog box will appear. Set the following values: Bits per second: 115,200...

  • Page 39: Using The Monitor Utility

    Chapter 4 – Accessing the Monitor Utility Using the Monitor Utility Once a connection has been set up between ACS-8990 and the host computer, first make sure ACS-8990 is turned on. When ACS-8990 boots up, it enters Self-Diagnostic Mode and runs diagnostic tests. The first test covers the CPU and supporting core logic chips, the internal bus, memory, SCSI controller, Serial ATA controllers, and RS-232 controllers.
  • Page 40 ACS-8990/89200/89230 User’s Manual The Monitor Utility has four sections: The Top Bar lists the RAID controller model number and the firmware (Monitor Utility) model number. The Control Panel LCD Output panel mirrors the appearance of the controller box LCD. Full explanation of LCD messages is given in Appendix D.

  • Page 41: Monitor Utility Control Keys

    Chapter 4 – Accessing the Monitor Utility Monitor utility control keys The monitor utility control keys differ depending on which area is active: Menu area or Output area. The control keys are listed at the bottom of the Monitor Utility screen. Menu area controls A / ↑...

  • Page 42: Chapter 5 - Configuration

    Users are advised to attend first to the system, then to the arrays. This manual covers three models: ACS-8990, ACS-89200 and ACS-89230. Where references are made to ACS-8990, they should be taken as applying to all three models. System configuration...

  • Page 43: Raid Configuration - Simple

    The administrator can specify up to two fax numbers and two Enter alert pager numbers to which alert messages will be sent in the settings event of an error with ACS-8990. Turn to Entering and editing alert settings. The default settings are appropriate for most users. Turn to Check and Advanced settings.

  • Page 44: Raid Configuration - Advanced

    ACS-8990/89200/89230 User’s Manual Restart Save settings and restart. Turn to Saving configurations. RAID configuration – advanced Create several arrays. For each in turn set the following Set parameters individual parameters: for multiple arrays RAID level Number of disks Number and size of slices...

  • Page 45: How To Configure Acs-8990

    Chapter 5 – Configuration How to configure ACS-8990 There are two ways to configure ACS-8990: Using the Control Panel Using the Monitor Utility These two methods are functionally identical. Only the interface differs. In each, the user scrolls through menus and submenus to locate and select the desired configuration option.

  • Page 46: Finding Your Way Around The Menus

    All configuration options are exercised from within these submenus. The main menus, as viewed from the Monitor Utility, for the two available hardware configurations of ACS-8990 are shown below: Fibre host interface configuration SCSI host interface configuration...

  • Page 47: Accessing The Main Menu

    ACS-8990) and open the connection established with ACS-8990 in Chapter 4. 2. Press Ctrl D to launch the Monitor Utility. When ACS-8990 boots up, it enters Self-Diagnostic Mode and runs diagnostic tests. The first test covers the CPU and supporting core logic chips, the internal bus, memory, SCSI controller, Serial ATA controllers, and RS-232 controllers.
  • Page 48 ACS-8990/89200/89230 User’s Manual 5. Enter the password. The default password is 00000000 (eight zeros). The system administrator should change this on first login. The password can be changed under the System params menu. Press Enter. The Main Menu will appear.

  • Page 49: Accessing The Main Menu Using The Control Panel

    Chapter 5 – Configuration Accessing the main menu using the control panel ACS-8990-16 STD 1. Turn on ACS-8990. The controller will first enter Self-Diagnostic Mode and then enter Operation Mode. A typical Operation Mode ××111××××××××××× screen is shown 2. Press Enter to enter Configuration Mode.

  • Page 50: Setting Array Parameters

    ACS-8990/89200/89230 User’s Manual Setting array parameters The parameters of the single or multiple ACS-8990 RAIDs are set and reconfigured from the RAID params submenu located at Main menu > RAID Params menu. 1.1.1 1 RAID params 1.1 Array 1 No / Yes Re-Conf RAID 1.1.2...

  • Page 51: Raid Params Menu

    Chapter 5 – Configuration RAID params menu Array 1 Configure / reconfigure array 1 1.1.1 Re-Conf RAID Select No or Yes. To avoid accidental erasure of an existing RAID, Yes must be selected prior to saving of any RAID configuration Data lost during reconfiguration cannot be recovered.
  • Page 52 A slice must be mapped to a LUN before it can be accessed. After creating slices, users should go to the FC (fibre channel) / SCSI Params menu (depending on ACS-8990 model) to map each to a LUN. Online Init 1.1.5...
  • Page 53 Configuration changes made in the RAID Params menu must be saved to the ACS-8990 non-volatile memory and ACS-8990 restarted for the changes to take effect. This is done in the NVRAM menu accessed from the Main menu..
  • Page 54 ACS-8990/89200/89230 User’s Manual Select “16 Byte CDB” or “Variable Sector Size” to create the slice could over 2TB 16 Byte CDB (Command description block): It’s a standard SCSI command Variable Sector Size: under this option, you could select 1K/sector (4T) or 2K/sector (8T) or 4K/sector (16T).

  • Page 55: Setting Scsi Parameters

    SCSI Params submenu located at Main menu > SCSI Params menu. The settings are needed to avoid conflict with the SCSI adapter or other SCSI devices ACS-8990 is available in two hardware configurations: With a fibre channel interface and with a SCSI interface. The SCSI Params menu is only present on the SCSI interface configuration.
  • Page 56 LUN 127) and a corresponding slice on which to map it. A RAID may be divided into several logical units (that portion of a disk array seen by the host system as a single logical device). ACS-8990 can support up to 16 logical units in total.
  • Page 57 (submenu items as above) Configuration changes made in the SCSI Params menu must be saved to the ACS-8990 non-volatile memory and ACS-8990 restarted for the changes to take effect. This is done in the NVRAM menu accessed from the Main menu..

  • Page 58: Setting Fibre Channel Parameters

    FC (fibre channel) params submenu located at Main menu > FC params menu. ACS-8990 is available in two hardware configurations: With a fibre channel interface and with a SCSI interface. The FC Params menu is only present on the fibre channel interface configuration.

  • Page 59: Fc Params Menu

    Select Port 2.3.1.2 Port 1 or Port 2. The two ports are equivalent to the two host channels. Then choose Enable (to allow hosts on that channel to view ACS-8990) or Disable (to make ACS-8990 invisible to hosts on that channel).

  • Page 60: Setting Port Parameters

    RS232 Params menu The administrator should specify the communication protocols between ACS-8990 and the external modem and between ACS-8990 and the remote terminal or terminal emulation software. This is done in the Modem Port menu located at Main menu > RS232 Params menu >...

  • Page 61: Modem Port Menu

    Parity None, Odd or Even (Default: None) The remote terminal settings and those of ACS-8990 must match. So, if the administrator increases the baud rate of the ACS-8990 port, the baud rate of the terminal emulation software (e.g. HyperTerminal) connection must...

  • Page 62: Password Security

    Entering and editing alert settings The administrator can specify two fax numbers and two pager numbers to which alert messages will be sent in the event of an error with ACS-8990. To configure alert settings, follow the instructions in succeeding sections to: 1.

  • Page 63: Pager Alert Settings

    Chapter 5 – Configuration Pager alert settings Pager alert settings are all entered and edited from the Pager Info submenu, located at Main menu > System Params menu > Pager Info 4.2.1 4.2 Pager Info Enable / Disable System params Paging 4.2.2 4.2.2.1 Tel No.

  • Page 64: Fax Alert Settings

    (Default: 5). 4.2.7 Page Now Select Yes to instruct ACS-8990 to send a test pager alert immediately. When the above data has been entered appropriately, go to the NVRAM submenu to update settings so that the configuration changes are saved.

  • Page 65: Company Info Menu

    Configuration changes made in the System Params menu must be saved to the ACS-8990 non-volatile memory for the changes to take effect. This is done in the NVRAM menu accessed from the Main menu.. See Saving Configurations...

  • Page 66: Saving Configurations

    Shut Down Yes or No (default: No) To ensure that data is not lost or corrupted, always turn off ACS-8990 using the Shut Down command. To shut down, first shut down the terminal/host system, then select Shut Down from the NVRAM menu. Finally, power off ACS-8990.

  • Page 67: Advanced Settings

    Chapter 5 – Configuration Advanced settings RAID Functions menu Stop / Start Select Array RAID Functions Init Parity Stop / Start Select Array Parity Check Clear / Enable / Beeper Disable No / Yes Stop Modem Select disk Add Disk number Select disk Remove Disk...
  • Page 68 Select Yes to halt the transmission of subsequent alert faxes / pager messages when the message has been received and acknowledged (Default: No). Add Disk Select disk number (1 to 16) Add a disk to an existing configuration while ACS-8990 is online (Default: None). Remove Disk...
  • Page 69 Chapter 5 – Configuration Select disk number (1 to 16) Remove a disk from an existing configuration while ACS-8990 is online. This function enables the administrator to shut down a potentially faulty disk. If a spare drive is present, it will automatically be added (Default: None).
  • Page 70 ACS-8990/89200/89230 User’s Manual 6.9.3.1 Set RTC Enter time in MM/DD/YY W HH:MM format. MM: Month; DD: Day; YY: Year; W: Week; HH: Hour; MM: Minute. 6.9.3.2 Show RTC Select to have time displayed on control panel 6.9.3.3 Stop RTC Select to turn off RTC 6.A.1...
  • Page 71 Chapter 5 – Configuration Users could set up the schedule for disk scrubbing for one or all arrays . After select ON, users could select Once / Once per 1 week/Once per 4 weeks/ Once per 8 weeks/ Once per 12 weeks / Once per 16 weeks / Once per 20 weeks / Once per 24 weeks to execute scrubbing schedule function When the array is not in the optimal state, the controller will give up disk scrubbing and record this event in the event...
  • Page 72 ACS-8990/89200/89230 User’s Manual Choose the source disk first from the displayed array member and then choose which one disk will be the target disk to be cloned. The capacity of the target disk must be equal to or larger than the source disk.
  • Page 73 The number of threshold for swap must be bigger than threshold for swap. Update ROM Use this option to update the ACS-8990 programmable firmware. See Appendix H, Updating the Firmware.
  • Page 74 ACS-8990/89200/89230 User’s Manual Configuration changes made in the RAID Functions menu must be saved to the ACS-8990 non-volatile memory for the changes to take effect. This is done in the NVRAM menu accessed from the Main menu.. See Saving Configurations...

  • Page 75: Appendix A - Troubleshooting

    Unable to access ACS-8990 after the operating system boots up. Possible Cause: ACS-8990 is not configured. Fix: Make sure ACS-8990 is configured for a RAID level. If no RAID level is configured the operating system will not detect ACS-8990 as a disk drive.
  • Page 76 ACS-8990/89200/89230 User’s Manual When controller power off, will the data be changed ? Ans:If controller is powered off, the data will still be guaranteed identically between the source disk and the clone disk. All writes are saved in the NVRAM, and when controller restart, the...
  • Page 77 Parity, and None Flow control. Make sure the terminal is configured for these settings. If the settings were changed in Configuration Mode, verify the settings of the ACS-8990 in the RS-232 Params, Terminal option and change the terminal settings accordingly.
  • Page 78 ACS-8990 is not properly identified by the SCSI adapter during initialization of the computer system. Possible Cause: The SCSI ID set for the ACS-8990 is being used by another SCSI device attached to the same SCSI card. Fix: Select the Set SCSI ID option from the SCSI Params menu and specify a different SCSI ID.
  • Page 79 Appendix A – Troubleshooting Possible Cause: The SCSI ID set for ACS-8990 is identical to the reserved SCSI ID used by the SCSI card in your system. Fix: Select the Set SCSI ID option from the SCSI Params menu and specify a different SCSI ID.
  • Page 80 ACS-8990/89200/89230 User’s Manual The ACS-8990 can support the following RAID levels: 0, 1, 3, 5, 0+1, 30, 50 , NRAID and JBOD. Which is the right level for you? The answer depends on the application you use your RAID for.

  • Page 81: Appendix B - Introduction To Raid Levels

    Appendix B – Introduction to RAID levels RAID 0 RAID 0 links each drive in the array as one huge drive. Storage capacity is determined by the smallest drive in the array. That capacity is then applied to format all other drives in the array. If using a 40 GB, 60 GB, and 50 GB drive in a RAID 0 array, your system will see one huge drive of 120 GB (40 GB×3).

  • Page 82: Raid 1

    ACS-8990/89200/89230 User’s Manual RAID 1 RAID 1 is commonly referred to as Disk Mirroring, Disk Shadowing or Disk Duplexing as all data is duplicated across all disks. As data is identical on all disks, storage capacity is that of the smaller disk.

  • Page 83: Raid 0+1

    Appendix B – Introduction to RAID levels RAID 0+1 RAID 0+1 combines mirroring and striping functions on a minimum of four hard disks. Mirroring provides full redundancy and protects data in case of multiple drive failure (providing that data on one of each mirrored pair of drives is intact). RAID 0+1: Combination of mirroring and striping Characteristics: This configuration provides optimal speed and reliability.

  • Page 84: Raid 3

    ACS-8990/89200/89230 User’s Manual RAID 3 RAID 3 uses a mathematical expression that compares data from two drives and calculates a third piece of data called “parity”. Should one of the drives fail, parity data can be used to rebuild the failed data. Under RAID 3, parity data is stored on a dedicated parity disk. If two or more disks were to fail however, data would be lost.

  • Page 85: Raid 30

    Appendix B – Introduction to RAID levels RAID 30 RAID 30 arrays are formed by striping data across RAID 3 sub-arrays. They offer better performance than RAID 3 alone but do not have the speed of a pure RAID 0 array. Storage efficiency and fault tolerance vary depending on the number and size of sub-arrays compared to the array as a whole.

  • Page 86: Raid 5

    ACS-8990/89200/89230 User’s Manual RAID 5 RAID 5 uses a mathematical expression that compares data from two drives and calculates a third piece of data called “parity”. Should one of the drives fail, parity data can be used to rebuild the failed data. Under RAID 5, parity data is stored across all drives in the array. This maximizes the amount of storage capacity available from all drives in the array while still providing data redundancy.

  • Page 87: Raid 50

    Appendix B – Introduction to RAID levels RAID 50 RAID 50 arrays are formed by striping data across RAID 5 sub-arrays. They offer better performance than RAID 5 alone, particularly in write speed, but do not have the speed of a pure RAID 0 array.

  • Page 88: Jbod

    ACS-8990/89200/89230 User’s Manual JBOD JBOD (“Just a Bunch of Disks”) reports the individual drives. The operating system will see each drive in the JBOD mode as a individual drive. There is no RAID protection in the JBOD mode. The JBOD mode allows the user to connect more hard drives without taking up IDE connections on the motherboard.

  • Page 89: Nraid

    Appendix B – Introduction to RAID levels NRAID NRAID (“Non-RAID”) , the capacity of all the drives is combined to become one logical drive (no block striping). That is to say, the capacity of the logical drive is the total capacity of the physical drives.

  • Page 90: Appendix C - Introduction To Serial Ata

    ACS-8990/89200/89230 User’s Manual Serial ATA is a disk-interface technology that is an evolutionary advance on Parallel ATA (IDE). Compatible with today’s software and OS-transparent, Serial ATA offers several compelling advantages for RAID storage solutions. These include cables that are easier to route and install;...

  • Page 91: Performance

    Appendix C – Introduction to Serial ATA Performance Serial ATA technology delivers up to 1.5Gb/sec of performance to each drive within a disk drive array – more than enough to help you get the most out of the current generation of hard drives. Serial ATA is also more reliable than Parallel ATA: instructions as well as data are checked for errors, resulting in higher reliability, and less frequent corruption of data.

  • Page 92: Appendix D - Control Panel Messages

    ACS-8990/89200/89230 User’s Manual Status messages When ACS-8990 is in operation mode, scroll buttons ▼ and ▲ can be used to display the following system data: Installed Memory RAID Capacity Firmware Version Serial Number CPU Type RAID Members RAID Level SCSI ID...

  • Page 93: Appendix E - Glossary

    Appendix E – Glossary Array See Disk Array. Array Management Software The body of software that provides common control and management for a disk array. Array Management Software most often executes in a disk controller or intelligent host bus adapter, but may also execute in a host computer.
  • Page 94 ACS-8990/89200/89230 User’s Manual Hot Swap The substitution of a (usually defective) unit by a replacement that takes place while the system is online. Logical Unit Disk storage space on one or more physical drives that appears to the host computer as a single drive.

  • Page 95: Appendix F - Specifications

    Appendix F – Specifications Item Specifications OS Independent and Transparent Operation System Intel i80321 64-bit RISC microprocessor LSI 53C1030T or Qlogic ISP2312 SCSI or FC I/O Processor 0, 1, 3, 5, 0+1,30,50,and JBOD,NRAID RAID Level PC 200 DDR 64 1G memory with ECC support Cache Memory 2(Max) Ultra 320 SCSI LVD SCSI Channel to Host...

  • Page 96: Appendix G - Statistics

    ACS-8990/89200/89230 User’s Manual System and array settings and statistics can be viewed by selecting the submenu RAID funcs > Statistic Information is displayed in the Monitor Utility output window (this information cannot be viewed from the control panel) under the following headings:...
  • Page 97 Appendix G – Statistics Slice information: the size of each slice in the array is given. If no extra slices have been created, the entire RAID capacity is assigned to a single slice (Slice 0) by default.

  • Page 98: Scsi Information

    Wide LUN map LUN map: ACS-8990 supports up to 16 logical units in total. Slices must be mapped to logical units to be accessible by the operating system. The LUN map shows which slices map to logical units. A typical readout may show:...

  • Page 99: Fibre Information

    Data Rate LUN map LUN map: ACS-8990 supports up to 16 logical units in total. Slices must be mapped to logical units to be accessible by the operating system. The LUN map shows which slices map to logical units. A typical readout may show:...

  • Page 100: Fax Information

    ACS-8990/89200/89230 User’s Manual Fax information The following data are shown. Refer to Fax info menu in Fax alert settings in Chapter 5 for details. Fax mode Fax number: Retry count Pager information The following data are shown. Refer to Pager alert settings in Chapter 5 for details.

  • Page 101: Appendix H - Updating The Firmware

    Appendix H – Updating the Firmware ACS-8990 is shipped with firmware installed. The user may however wish to download new or upgraded editions of the firmware to the controller. Ask your vendor about the latest firmware edition or refer to the website www.accusys.com.tw A terminal emulation program, such as HyperTerminal, is required to download firmware.
  • Page 102 ACS-8990/89200/89230 User’s Manual Locate the updated firmware file to send. If using HyperTerminal, go to the Transfer menu and select Send Text File… Send firmware file as a text file. The file will start to download. When prompted, enter Go (case sensitive) to update the firmware.

  • Page 103: Appendix I - Contact Us

    8F, No.47, Lane 2, Sec. 2, Guangfu Rd., Hsinchu, Taiwan, R.O.C. • Tel : +886-3-575-0668 • Fax : +886-3-575-0866 • http://www.accusys.com.tw/ • e-mail : sales@accusys.com.tw Accusys U.S.A., Inc. • Address: 46710 Fremont Blvd. Fremont, CA 94538, U.S.A. • Tel:+1-510-661-0800 • FAX:+1-510-661-9800 •...

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