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LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520 Hardware Manual

Lsi logic megaraid scsi 320-0 zero-channel raid controller user's guide
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Summary of Contents for LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520

  • Page 1: Hardware Guide

    HARDWARE GUIDE ® MegaRAID SCSI 320-0 Zero-Channel RAID Controller S e p t e m b e r 2 0 0 2 ®...
  • Page 2 This document contains proprietary information of LSI Logic Corporation. The information contained herein is not to be used by or disclosed to third parties without the express written permission of an officer of LSI Logic Corporation. LSI Logic products are not intended for use in life-support appliances, devices, or systems.
  • Page 3 FCC Regulatory Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 4 Copyright © 2002 by LSI Logic Corporation. All rights reserved.
  • Page 5 Preface This book is the primary reference and Hardware Guide for the LSI Logic MegaRAID the MegaRAID controller and for configuring RAID arrays. It also contains background information on RAID. The MegaRAID SCSI 320-0 controller supports single-ended and low- voltage differential (LVD) SCSI devices on an Ultra320 and Wide SCSI channel with data transfer rates up to 320 Mbytes/s.
  • Page 6 · Chapter 6, Hardware MegaRAID SCSI 320-0 controller. · Chapter 7, for the MegaRAID SCSI 320-0 controller. · Appendix A, Audible warning tones generated by the MegaRAID SCSI 320-0 RAID controller. Technical Support If you need help installing, configuring, or running the MegaRAID SCSI 320-0 Controller, you may be able to find the information you need at the MegaRAID support page at If this does not resolve your problem, you can call your LSI Logic OEM...
  • Page 7 MegaRAID Problem Report Form (Cont.) MegaRAID Driver Ver.: Network Card: Other disk controllers installed: Description of problem: Steps necessary to re-create problem: Logical Drive Configuration Use this form to record the configuration details for your logical drives. Logical Drive Configuration Logical RAID Stripe...
  • Page 8 Logical Drive Configuration (Cont.) Logical RAID Stripe Drive Level Size LD10 LD11 LD12 LD13 LD14 LD15 LD16 LD17 LD18 LD19 LD20 LD21 LD22 LD23 LD24 LD25 LD26 LD27 LD28 LD29 LD30 LD31 LD32 LD33 viii Preface Copyright © 2002 by LSI Logic Corporation. All rights reserved. Logical Drive Cache Read...
  • Page 9 Logical Drive Configuration (Cont.) Logical RAID Stripe Drive Level Size LD34 LD35 LD36 LD37 LD38 LD39 Physical Device Layout Use this form to record the physical device layout. Physical Device Layout Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type...
  • Page 10 Physical Device Layout (Cont.) Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID...
  • Page 11 Physical Device Layout (Cont.) Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID...
  • Page 12 Physical Device Layout (Cont.) Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Preface Copyright © 2002 by LSI Logic Corporation. All rights reserved. Channel 0 Channel 1...

  • Page 13: Table Of Contents

    Contents Chapter 1 Overview Features NVRAM and Flash ROM Single-Ended and Differential SCSI Buses Maximum Cable Length for SCSI Standards SCSI Bus Widths and Maximum Throughput Documentation 1.6.1 1.6.2 1.6.3 Chapter 2 Introduction to RAID RAID Benefits 2.1.1 2.1.2 MegaRAID SCSI 320-0 – Host-Based RAID Solution 2.2.1 2.2.2 RAID Overview...
  • Page 14 2.3.8 2.3.9 2.3.10 2.3.11 2.3.12 2.3.13 2.3.14 2.3.15 Chapter 3 RAID Levels Selecting a RAID Level RAID 0 RAID 1 RAID 5 RAID 10 RAID 50 Chapter 4 Features SMART Technology Configuration on Disk Configuration Features Array Performance Features RAID Management Features Fault Tolerance Features Software Utilities Operating System Software Drivers...
  • Page 15 4.10.4 4.11 Compatibility 4.11.1 4.11.2 4.11.3 Chapter 5 Configuring Physical Drives, Arrays, and Logical Drives Configuring SCSI Physical Drives 5.1.1 5.1.2 5.1.3 5.1.4 Configuring Arrays 5.2.1 5.2.2 Creating Logical Drives 5.3.1 5.3.2 Configuring Logical Drives 5.4.1 Planning the Array Configuration 5.5.1 Chapter 6 Hardware Installation...
  • Page 16 Chapter 7 Troubleshooting General Troubleshooting BIOS Boot Error Messages Other BIOS Error Messages Other Potential Problems Appendix A Audible Warnings Appendix B Glossary Index Customer Feedback Contents Copyright © 2002 by LSI Logic Corporation. All rights reserved.

  • Page 17: Chapter 1 Overview

    Chapter 1 Overview This chapter provides an overview of the MegaRAID basic SCSI features. It contains the following sections: · Section 1.1, “Features” · Section 1.2, “NVRAM and Flash ROM” · Section 1.3, “Single-Ended and Differential SCSI Buses” · Section 1.4, “Maximum Cable Length for SCSI Standards” ·...

  • Page 18: Overview

    Features MegaRAID SCSI 320-0 features include: · Provides a high performance I/O migration path while preserving existing PCI-SCSI software. · Performs SCSI data transfers up to 320 Mbytes/s. · Performs synchronous operation on a wide low-voltage differential (LVD) SCSI bus. ·...

  • Page 19: Maximum Cable Length For Scsi Standards

    Maximum Cable Length for SCSI Standards Table 1.1 that you can use, depending on the SCSI speeds. Table 1.1 Standard Ultra SCSI Ultra SCSI Wide Ultra SCSI Wide Ultra SCSI Wide Ultra SCSI Ultra 2 SCSI Ultra 2 SCSI Wide Ultra 2 SCSI Wide Ultra 2 SCSI Ultra160 SCSI Ultra160 SCSI...

  • Page 20: Scsi Bus Widths And Maximum Throughput

    SCSI Bus Widths and Maximum Throughput Table 1.2 the SCSI speeds. Table 1.2 SCSI Standard Fast Wide SCSI Wide Ultra SCSI Wide Ultra 2 SCSI Wide Ultra 160 SCSI Ultra 320 SCSI Documentation The MegaRAID SCSI 320-0 documentation set includes: ·...

  • Page 21: Megaraid Operating System Driver Installation Guide

    1.6.3 MegaRAID Operating System Driver Installation Guide This manual provides detailed information about installing the MegaRAID SCSI 320-0 operating system drivers. Documentation Copyright © 2002 by LSI Logic Corporation. All rights reserved.
  • Page 22 Overview Copyright © 2002 by LSI Logic Corporation. All rights reserved.

  • Page 23: Introduction To Raid

    Chapter 2 Introduction to RAID This chapter introduces important RAID concepts. It contains the following sections: · Section 2.1, “RAID Benefits” · Section 2.2, “MegaRAID SCSI 320-0 – Host-Based RAID Solution” · Section 2.3, “RAID Overview” RAID (Redundant Array of Independent Disks) is a data storage method in which data, along with parity information, is distributed among two or more hard disks (called an array) to improve performance and reliability.

  • Page 24: Increased Reliability

    2.1.2 Increased Reliability The electromechanical components of a disk subsystem operate more slowly, require more power, and generate more noise and vibration than electronic devices. These factors reduce the reliability of data stored on disks. RAID provides a way to achieve much better fault tolerance and data reliability.

  • Page 25: Scsi-To-Scsi External Raid

    2.2.2 SCSI-to-SCSI External RAID A SCSI-to-SCSI external RAID product puts the RAID intelligence inside the RAID chassis and uses a plain SCSI host adapter installed in the network server. The data transfer rate is limited to the bandwidth of the SCSI channel.

  • Page 26: Consistency Check

    · A combination of any two of the above conditions 2.3.3 Consistency Check A consistency check verifies the correctness of redundant data in a RAID array. For example, in a system with distributed parity, checking consistency means computing the parity of the data drives and comparing the results to the contents of the parity drives.
  • Page 27 Figure 2.1 Segment 1 Segment 5 Segment 9 Disk striping involves partitioning each disk drive’s storage space into stripes that can vary in size from 2 to 128 Kbytes. These stripes are interleaved in a repeated, sequential manner. The combined storage space is composed of stripes from each drive.

  • Page 28: Disk Mirroring

    2.3.5.2 Stripe Size The stripe size is the length of the interleaved data segments that MegaRAID SCSI 320-0 writes across multiple drives. MegaRAID SCSI 320-0 supports stripe sizes of 2, 4, 8, 16, 32, 64, or 128 Kbytes. 2.3.6 Disk Mirroring With disk mirroring (used in RAID 1), data written to one disk drive is simultaneously written to another disk drive, as shown in Figure 2.2...

  • Page 29: Disk Spanning

    2.3.7 Disk Spanning Disk spanning allows multiple disk drives to function like one big drive. Spanning overcomes lack of disk space and simplifies storage management by combining existing resources or adding relatively inexpensive resources. For example, four 60 Gbyte disk drives can be combined to appear to the operating system as one single 240 Gbyte drive.

  • Page 30: Parity

    Table 2.1 Table 2.1 Level Description Note: 2.3.8 Parity Parity generates a set of redundancy data from two or more parent data sets. The redundancy data can be used to reconstruct one of the parent data sets. Parity data does not fully duplicate the parent data sets. In RAID, this method is applied to entire drives (dedicated parity) or to stripes across all disk drives in an array (distributed parity).

  • Page 31: Hot Swapping

    has a capacity closest to and at least as great as that of the failed drive to take the place of the failed drive. Note: 2.3.10 Hot Swapping Hot swapping is the manual replacement of a defective physical disk unit while the computer is still running.

  • Page 32: Logical Drive States

    The MegaRAID SCSI 320-0 rebuild rate can be configured between 0% and 100%. At 0%, the rebuild is only done if the system is not doing anything else. At 100%, the rebuild has a higher priority than any other system activity. 2.3.12 Logical Drive States Table 2.2 Table 2.2...

  • Page 33: Disk Array Types

    2.3.14 Disk Array Types Table 2.4 Table 2.4 Type Software- Based SCSI to SCSI The array controller resides outside of the host computer and Bus-Based 2.3.15 Enclosure Management Enclosure management is the intelligent monitoring of the disk subsystem by software and/or hardware. The disk subsystem can be part of the host computer or can be separate from it.
  • Page 34 2-12 Introduction to RAID Copyright © 2002 by LSI Logic Corporation. All rights reserved.

  • Page 35: Raid Levels

    Chapter 3 RAID Levels This chapter describes each supported RAID level and the factors to consider when choosing a RAID level. It contains the following sections: · Section 3.1, “Selecting a RAID Level” · Section 3.2, “RAID 0” · Section 3.3, “RAID 1” ·...

  • Page 36: Raid

    RAID 0 RAID 0 provides disk striping across all drives in the RAID subsystem. RAID 0 does not provide any data redundancy, but does offer the best performance of any RAID level. RAID 0 breaks up data into smaller blocks and then writes a block to each drive in the array. The size of each block is determined by the stripe size parameter, set during the creation of the RAID set.

  • Page 37: Raid

    Figure 3.1 Segment 1 Segment 5 Segment 9 RAID 1 In RAID 1, the MegaRAID SCSI 320-0 duplicates all data from one drive to a second drive. RAID 1 provides complete data redundancy, but at the cost of doubling the required data storage capacity. Uses Strong Points Weak Points...
  • Page 38 Figure 3.2 Segment 1 Segment 2 Segment 3 Segment 4 RAID 5 RAID 5 includes disk striping at the byte level and parity. In RAID 5, the parity information is written to several drives. RAID 5 is best suited for networks that perform many small I/O transactions simultaneously.
  • Page 39 Uses Strong Points Weak Points Drives Figure 3.3 Figure 3.3 RAID 5 Array Note: Parity is distributed across drives in the array. Disk 1 Disk 2 Segment 1 Segment 2 Segment 7 Segment 8 Parity (9–12) RAID 5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Provides high data throughput, especially for large files.
  • Page 40 RAID 10 RAID 10 is a combination of RAID 0 and RAID 1. RAID 10 has mirrored drives. RAID 10 breaks up data into smaller blocks, and then stripes the blocks of data to each RAID 1 RAID set. Each RAID 1 RAID set then duplicates its data to its other drive.

  • Page 41: Raid

    Figure 3.4 Segment 1 Segment 3 Segment 5 RAID 50 RAID 50 provides the features of both RAID 0 and RAID 5, including both parity and disk striping across multiple drives. RAID 50 is best implemented on two RAID 5 disk arrays with data striped across both disk arrays.
  • Page 42 RAID 50 can sustain one to four drive failures while maintaining data integrity, if each failed disk is in a different RAID 5 array. Uses Strong Points Weak Points Drives Figure 3.5 Figure 3.5 RAID 50 Array RAID 5 Disk 1 Disk 2 Segment 1 Segment 2...

  • Page 43: Features

    Chapter 4 Features This chapter explains the features of the MegaRAID SCSI 320-0. It contains the following sections: · Section 4.1, “SMART Technology” · Section 4.2, “Configuration on Disk” · Section 4.3, “Configuration Features” · Section 4.4, “Array Performance Features” ·...

  • Page 44: Cache Memory

    Configuration on Disk Configuration on Disk (drive roaming) saves configuration information both in nonvolatile random access memory (NVRAM) on the MegaRAID SCSI 320-0, and on the disk drives controlled by the MegaRAID SCSI 320-0. If the MegaRAID SCSI 320-0 is replaced, the new MegaRAID SCSI 320-0 controller can detect the actual RAID configuration, maintaining the integrity of the data on each drive, even if the drives have changed channel and/or target ID.

  • Page 45: Array Performance Features

    Table 4.1 Specification Online capacity expansion Hot spare support Flashable firmware Hot swap devices supported Non-disk devices supported Mixed capacity hard disk drives Support for hard disk drives with capacities of more than 8 Gbytes. Clustering support (Failover control) Online RAID level migration RAID remapping No reboot necessary after expansion More than 200 Qtags per physical drive Yes...

  • Page 46: Raid Management Features

    RAID Management Features Table 4.3 Table 4.3 Specification Support for SNMP Performance Monitor provided Remote control and monitoring Support for concurrent multiple stripe sizes Windows NT, 2000, XP, and .NET server support using a GUI client utility Fault Tolerance Features Table 4.4 Table 4.4 Specification...

  • Page 47: Software Utilities

    Software Utilities Table 4.5 Table 4.5 Specification Graphical user interface Management utility Bootup configuration using MegaRAID Manager Online read, write, and cache policy switching Operating System Software Drivers MegaRAID SCSI 320-1 includes a DOS software configuration utility, and drivers for: ·...

  • Page 48: Megaraid Scsi 320-0 Specifications

    MegaRAID SCSI 320-0 Specifications Table 4.6 Table 4.6 Parameter Card size Processor Bus type PCI controller Bus data transfer rate BIOS Cache configuration Firmware Nonvolatile RAM Operating voltage SCSI data transfer rate Up to 320 Mbytes/s SCSI device types supported RAID levels supported 4.9.1 PCI Bridge/CPU...

  • Page 49: Cache Memory

    4.9.2 Cache Memory MegaRAID SCSI 320-0 supports 32 to 128 Mbytes of ECC SDRAM DIMM on-board cache memory. MegaRAID supports write-through or write-back caching, which can be selected for each logical drive. To improve performance in sequential disk accesses, MegaRAID does not use read-ahead caching for the current logical drive.

  • Page 50: Raid Management

    4.10 RAID Management RAID management is provided by software utilities that manage and configure the RAID system and MegaRAID SCSI 320-0, create and manage multiple disk arrays, control and monitor multiple RAID servers, provide error statistics logging, and provide online maintenance. They include: ·...

  • Page 51: Server Management

    4.11 Compatibility MegaRAID SCSI 320-0 compatibility issues include: · Server management · SCSI device compatibility · Software compatibility 4.11.1 Server Management As a simple network management protocol (SNMP) agent, MegaRAID SCSI 320-0 supports all SNMP managers. 4.11.2 SCSI Device Compatibility MegaRAID SCSI 320-0 supports SCSI hard drives, CD drives, and tape drives.
  • Page 52 4-10 Features Copyright © 2002 by LSI Logic Corporation. All rights reserved.

  • Page 53: Configuring Physical Drives, Arrays, And Logical Drives

    Chapter 5 Configuring Physical Drives, Arrays, and Logical Drives This chapter explains how to configure SCSI physical drives, arrays, and logical drives. It contains the following sections: · Section 5.1, “Configuring SCSI Physical Drives” · Section 5.2, “Configuring Arrays” · Section 5.3, “Creating Logical Drives”...

  • Page 54: Current Physical Device Configuration

    Note: 5.1.2 Current Physical Device Configuration Table 5.1 devices. Table 5.1 SCSI ID Device Description Configuring Physical Drives, Arrays, and Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. Be sure to back up your data regularly, even when using RAID.

  • Page 55: Logical Drive Configuration

    5.1.3 Logical Drive Configuration Table 5.2 Table 5.2 Logical Drive Configuration Logical RAID Stripe Drive Level Size LD10 LD11 LD12 LD13 LD14 LD15 LD16 LD17 LD18 LD19 LD20 LD21 Configuring SCSI Physical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. to record the configuration for your logical drives.
  • Page 56 Table 5.2 Logical Drive Configuration (Cont.) Logical RAID Stripe Drive Level Size LD22 LD23 LD24 LD25 LD26 LD27 LD28 LD29 LD30 LD31 LD32 LD33 LD34 LD35 LD36 LD37 LD38 LD39 Configuring Physical Drives, Arrays, and Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. Logical Drive Cache Size...

  • Page 57: Physical Device Layout

    5.1.4 Physical Device Layout Table 5.3 Table 5.3 Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID...
  • Page 58 Table 5.3 Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type...
  • Page 59 Table 5.3 Physical Device Layout (Cont.) Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Target ID...

  • Page 60: Configuring Arrays

    Table 5.3 Target ID Device type Logical drive number/Drive number Manufacturer/Model number Firmware level Configuring Arrays You organize the physical disk drives in arrays after they are connected to the SCSI channels controlled by the LSI Logic SCSI chip on the motherboard, and after they are formatted.

  • Page 61: Creating Logical Drives

    You can designate drives as hot spares using the MegaRAID BIOS Configuration Utility, the MegaRAID Manager, or Power Console Plus. Creating Logical Drives Logical drives are arrays or spanned arrays that are presented to the operating system. You must create one or more logical drives. The logical drive capacity can include all or any portion of an array.
  • Page 62 Table 5.4 RAID Level 5.3.1.2 Maximizing Drive Availability You can maximize the availability of data on the physical disk drive in the logical array by maximizing the level of fault tolerance. describes the levels of fault tolerance for the RAID levels. Table 5.5 RAID Level 5.3.1.3...

  • Page 63: Assigning Raid Levels

    Table 5.6 RAID Level 5.3.2 Assigning RAID Levels Only one RAID level can be assigned to each logical drive. shows the drives required per RAID level. Table 5.7 RAID Level Note: Creating Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. Performance Characteristics for RAID Levels Performance Characteristics Excellent for all types of I/O activity, but provides no data...

  • Page 64: Configuring Logical Drives

    Configuring Logical Drives After you have installed the MegaRAID SCSI 320-0 controller in the server and have attached all physical disk drives, perform the following actions to prepare a RAID array: 1. Optimize MegaRAID SCSI 320-0 controller options for your system. See Chapter 6 for additional information.

  • Page 65: Planning The Array Configuration

    print servers? Does this disk array support any software system that must be available 24 hours per day? Will the information stored in this disk array contain large audio or video files that must be available on demand? Will this disk array contain data from an imaging system? You must identify the purpose of the data to be stored in the disk subsystem before you can confidently choose a RAID level and a RAID configuration.
  • Page 66 Table 5.9 Table 5.9 # of Drives 5-14 Configuring Physical Drives, Arrays, and Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. to plan the array configuration. Array Configuration Planner Possible Relative RAID Levels Performance None Excellent RAID 0 Excellent None...
  • Page 67 Table 5.9 Array Configuration Planner (Cont.) Possible # of Drives RAID Levels RAID 0 RAID 5 RAID 10 RAID 50 Planning the Array Configuration Copyright © 2002 by LSI Logic Corporation. All rights reserved. Relative Fault Performance Tolerance Excellent Good Good Good Effective...
  • Page 68 5-16 Configuring Physical Drives, Arrays, and Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved.

  • Page 69: Hardware Installation

    Chapter 6 Hardware Installation This chapter explains how to install the MegaRAID SCSI 320-0 controller. It contains the following sections: · Section 6.1, “Hardware Requirements” · Section 6.2, “Installation Steps” · Section 6.3, “Summary” Hardware Requirements You must have the following in order to install the MegaRAID SCSI 320-0 controller and create arrays: ·...

  • Page 70: Installation Steps

    Installation Steps The MegaRAID SCSI 320-0 provides extensive customization options. If you need only basic MegaRAID SCSI 320-0 features and your computer does not use other adapter cards with resource settings that may conflict with MegaRAID SCSI 320-0 settings, even custom installation can be quick and easy.

  • Page 71: Step 2: Power Down

    · The Driver and Documentation CD, which contains these items: – – – – – · The warranty registration card 6.2.2 Step 2: Power Down Turn off the computer, remove the power cord, then remove the cover. Make sure the computer is turned off and disconnected from any networks before installing the controller card.
  • Page 72 Figure 6.1 6.2.3.1 J2 Dirty Cache LED J2 is a two-pin header for the dirty cache LED. This can be connected to an LED on the computer enclosure. The LED will be lit when data in the cache has not yet been written to the storage device. 6.2.3.2 J3 Clear EPROM J3 is a two-pin header that clears the erasable progammable read-only...

  • Page 73: Step 4: Install Megaraid Scsi

    6.2.3.4 J8 Connector for Optional BBU Daughter Card J8 is 40-pin connector that is used to mount an optional battery backup unit that is on a daughtercard. 6.2.4 Step 4: Install MegaRAID SCSI 320-0 Select the ZCR 3.3 V or 5 V PCI slot and align the MegaRAID SCSI 320-0 controller bus connector with the slot.

  • Page 74: Step 5: Power Up

    Figure 6.3 6.2.5 Step 5: Power Up Replace the computer cover and reconnect the AC power cords. Turn power on to the host computer. Set up the power supplies so that the SCSI devices are powered up at the same time as or before the host computer.

  • Page 75: Step 6: Run The Megaraid Bios Configuration Utility

    The firmware takes several seconds to initialize. During this time the adapter will scan the SCSI channel(s). When ready, the following appears: Host Adapter-1 Firmware Version x.xx DRAM Size 16 MB 0 Logical Drives found on the Host Adapter 0 Logical Drives handled by BIOS Press <Ctrl><M>...

  • Page 76: Summary

    Summary This chapter discussed hardware installation. Configure the RAID system using software configuration utilities. See the MegaRAID Configuration Software Guide for all information about MegaRAID SCSI 320-0 software utilities. The utility programs for configuring MegaRAID SCSI 320-0 are shown in Table 6.4 Configuration Utility MegaRAID BIOS Configuration Utility...

  • Page 77: Chapter 7 Troubleshooting

    Chapter 7 Troubleshooting This chapter provides troubleshooting information for the MegaRAID SCSI 320-0 controller. It contains the following sections: · Section 7.1, “General Troubleshooting” · Section 7.2, “BIOS Boot Error Messages” · Section 7.3, “Other BIOS Error Messages” · Section 7.4, “Other Potential Problems” General Troubleshooting This section lists the general problems that can occur, along with suggested solutions.
  • Page 78 Table 7.1 General Problems and Suggested Solutions (Cont.) Problem One of the hard drives in the array fails often. Pressed <Ctrl><M>. Ran Megaconf.exe and tried to make a new configuration. The system hangs when scanning devices. Multiple drives using the same power supply.

  • Page 79: Bios Boot Error Messages

    BIOS Boot Error Messages Table 7.2 system, and suggested solutions. Table 7.2 BIOS Boot Error Messages Message Problem Adapter BIOS Disabled. The MegaRAID BIOS is No Logical Drives disabled. Sometimes the Handled by BIOS BIOS is disabled to prevent booting from the BIOS.

  • Page 80: Other Bios Error Messages

    Table 7.2 BIOS Boot Error Messages (Cont.) Message Problem 1 Logical Drive A logical drive signed on Degraded in a degraded state. The following SCSI IDs The physical drives with are not responding: SCSI IDs a, b, and c are Channel x:a.b.c not responding on SCSI channel x.

  • Page 81: Other Potential Problems

    Table 7.3 Other BIOS Error Messages (Cont.) Message Problem Unresolved The configuration stored in the configuration MegaRAID NVRAM does not mismatch between match the configuration stored disks and NVRAM on on the drives. the adapter Other Potential Problems Table 7.4 Table 7.4 Other Potential Problems Topic...
  • Page 82 Table 7.4 Other Potential Problems (Cont.) Topic Information MegaRAID power The maximum MegaRAID SCSI 320-0 power requirements are 15 W at 5 V requirements and 3 A. SCSI bus The ANSI specification dictates the following: · requirements The maximum signal path length between terminators is 3 meters when using up to 4 maximum capacitance (25 pF) devices and 1.5 meters when using more than 4 devices.
  • Page 83 Appendix A Audible Warnings The MegaRAID SCSI 320-0 RAID controller has an onboard tone generator that indicates events and errors. Note: This is available only if the optional series 502 Battery Backup Unit (BBU) is installed. Table A.1 Audible Warnings and Descriptions Tone Pattern Meaning Three seconds on...
  • Page 84 Audible Warnings Copyright © 2002 by LSI Logic Corporation. All rights reserved.

  • Page 85: Appendix B Glossary

    Appendix B Glossary Array A grouping of individual disk drives that combines the storage space on the disk drives into a single segment of contiguous storage space. MegaRAID can group disk drives on one or more SCSI channels into an array.
  • Page 86 Channel An electrical path for the transfer of data and control information between a disk and a disk controller. Consistency An examination of the disk system to determine whether all conditions Check are valid for the specified configuration (such as parity.) Cold Swap A cold swap requires that you turn the power off before replacing a defective disk drive in a disk subsystem.
  • Page 87 provides high I/O performance at low cost, but provides lowers data reliability than any of its member disks. Disk Subsystem A collection of disks and the hardware that connects them to one or more host computers. The hardware can include an intelligent controller, or the disks can attach directly to a host computer I/O bus adapter.
  • Page 88 Host Computer Any computer to which disks are directly attached. Mainframes, servers, workstations, and personal computers can all be considered host computers. Hot Spare A stand-by disk drive ready for use if a drive in an array fails. A hot spare does not contain any user data.
  • Page 89 Mbyte (Megabyte) An abbreviation for 1,000,000 (10 to the sixth power) bytes. One Mbyte equals 1,000 Kbytes (kilobytes). Multi-threaded Having multiple concurrent or pseudo-concurrent execution sequences. Used to describe processes in computer systems. Multi-threaded processes allow throughput-intensive applications to efficiently use a disk array to increase I/O performance.
  • Page 90 RAID Redundant Array of Independent Disks. A data storage method in which data, along with parity information, is distributed among two or more hard disks (called an array) to improve performance and reliability. A RAID disk subsystem improves I/O performance on a server using only a single drive.
  • Page 91 Redundancy The provision of multiple interchangeable components to perform a single function to cope with failures or errors. Redundancy normally applies to hardware; disk mirroring is a common form of hardware redundancy. Replacement A disk available to replace a failed member disk in a RAID array. Disk Replacement A component or collection of components in a disk subsystem that is...
  • Page 92 Service The Service Provider (SP) is a program that resides in the desktop Provider system or server and is responsible for all DMI activities. This layer collects management information from products (whether system hardware, peripherals, or software), stores that information in the DMI database, and passes it to management applications as requested.
  • Page 93 Ultra320 A subset of Ultra3 SCSI that allows a maximum throughput of 320 Mbytes/s, which is twice as fast as Wide Ultra2 SCSI. Ultra320 SCSI provides 320 Mbytes/s on a 16-bit connection. Virtual Sizing FlexRAID virtual sizing is used to create a logical drive up to 80 Gbytes. A maximum of 40 logical drives can be configured on a RAID controller, and RAID migration is possible for all logical drives except the fortieth.
  • Page 94 B-10 Glossary Copyright © 2002 by LSI Logic Corporation. All rights reserved.
  • Page 95 Index Array Array Configuration Planner 5-14 Array management software Array performance features Array spanning Assigning RAID levels 5-11 Asynchronous operations Audible Warnings Automatic failed drive detection and rebuild BIOS BIOS Boot Error Messages BIOS Configuration Utility BIOS message Bus data transfer rate Bus type Bus-based 2-11...
  • Page 96 Install Drivers Installation steps Custom Jumpers Setting Linux Red Hat Logical disk Logical drive Logical drive states 2-10 Mapping MegaRAID BIOS MegaRAID BIOS Configuration Utility MegaRAID Manager MegaRAID SCSI 320-0 card Installing MegaRAID SCSI 320-0 card layout Mirroring MS-DOS Multi-threaded Nonvolatile RAM Novell NetWare NVRAM...
  • Page 97 Striping Technical Support 1-vi Terminator Troubleshooting Ultra320 and Wide SCSI Ultra3-SCSI (320M) Unpack Virtual sizing WebBIOS Configuration Utility Wide SCSI Windows .NET Windows 2000 Windows NT Windows XP Index Copyright © 2002 by LSI Logic Corporation. All rights reserved. IX-3...
  • Page 98 IX-4 Index Copyright © 2002 by LSI Logic Corporation. All rights reserved.

  • Page 99: Customer Feedback

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  • Page 100 Reader’s Comments Fax your comments to: Please tell us how you rate this document: MegaRAID SCSI 320-0 Hard- ware Guide. Place a check mark in the appropriate blank for each cate- gory. Completeness of information Clarity of information Ease of finding information Technical content Usefulness of examples and illustrations...

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