LSI MegaRAID SCSI 320-2 RAID Controller Series 518 User Manual Page 54
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4-10 Features
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
4.10.6 SCSI Bus
The MegaRAID SCSI 320-2 controller has two Ultra320 Wide SCSI
channels that support low voltage differential SCSI devices with active
termination. Both synchronous and asynchronous devices are supported.
The MegaRAID controller provides automatic termination disable via
cable detection. Each channel supports up to 15 wide or seven non-wide
SCSI devices at speeds up to 320 Mbytes/s per SCSI channel. The
MegaRAID controller supports up to six non-disk devices per controller.
The SCSI bus mode defaults to LVD for each SCSI channel. If a single-
ended device is attached to a SCSI channel, the MegaRAID controller
automatically switches to SE mode for that SCSI channel.
4.10.7 SCSI Connectors
The MegaRAID SCSI 320-2 has two types of SCSI connectors:
• Two 68-pin high density internal connectors
• Two 68-pin very-high-density external connectors
4.10.8 SCSI Termination
The MegaRAID SCSI 320-2 uses active termination on the SCSI bus,
conforming to Alternative 2 of the SCSI-2 specifications. Termination
enable/disable is automatic through cable detection.
4.10.9 SCSI Firmware
The MegaRAID SCSI 320-2 firmware handles all RAID and SCSI
command processing and also supports the features listed in Table 4.7.
Table 4.7 SCSI Firmware
Feature Description
Disconnect/
reconnect
Optimizes SCSI bus seek
Tagged command
queuing
Multiple tags to improve random access
Scatter/gather Multiple address/count pairs
- MegaRAID 1
- SCSI 320-2 1
- RAID Controller 1
- HARDWARE 1
- FCC Regulatory Statement 3
- Logical Drive Configuration 8
- Physical Device Layout 10
- Contents 15
- Contents xvii 17
- Contents xix 19
- Chapter 1 21
- Overview 21
- 1.2 NVRAM and Flash ROM 22
- 1.3 SCSI Connectors 22
- 1.7 Documentation 23
- • MegaRAID Manager 24
- • Power Console Plus 24
- Chapter 2 25
- Introduction to RAID 25
- 2.1.2 Increased Reliability 26
- 2.2.1 Host-Based RAID 26
- 2.3 RAID Overview 27
- 2.3.3 Consistency Check 28
- 2.3.4 Fault Tolerance 28
- 2.3.5 Disk Striping 28
- RAID Overview 2-5 29
- MegaRAID Controller 29
- 2.3.6 Disk Mirroring 30
- 2.3.7 Disk Spanning 31
- 2.3.8 Parity 32
- 2.3.9 Hot Spares 32
- 2.3.10 Hot Swapping 33
- 2.3.11 Disk Rebuild 33
- 2.3.12 Logical Drive States 34
- 2.3.13 SCSI Drive States 34
- 2.3.14 Disk Array Types 35
- 2.3.15 Enclosure Management 35
- 2-12 Introduction to RAID 36
- Chapter 3 37
- RAID Levels 37
- 3.2 RAID 0 38
- 3.3 RAID 1 39
- 3.4 RAID 5 40
- Figure 3.3 RAID 5 Array 41
- 3.5 RAID 10 42
- 3.6 RAID 50 43
- Figure 3.5 RAID 50 Array 44
- Chapter 4 45
- Features 45
- 4-2 Features 46
- 4.1 SMART Technology 47
- 4.2 Configuration on Disk 47
- 4.3 Configuration Features 47
- 4.5 RAID Management Features 49
- 4.6 Fault Tolerance Features 50
- 4.7 Software Utilities 50
- 4.10 MegaRAID Components 52
- 4.10.2 Cache Memory 53
- 4.10.3 MegaRAID BIOS 53
- 4.10.4 Onboard Speaker 53
- 4.10.5 Serial Port 53
- 4.10.6 SCSI Bus 54
- 4.10.7 SCSI Connectors 54
- 4.10.8 SCSI Termination 54
- 4.10.9 SCSI Firmware 54
- 4.11 RAID Management 55
- 4.12 Compatibility 56
- Chapter 5 57
- Configuring Physical Drives 57
- Arrays, and Logical Drives 57
- 5.1.5 Physical Device Layout 62
- 5.2 Configuring Arrays 65
- 5.3 Creating Logical Drives 66
- 5.3.2 Assigning RAID Levels 68
- 5.4 Configuring Logical Drives 69
- Chapter 6 73
- Hardware Installation 73
- 6.2 Installation Steps 74
- 6.2.1 Step 1: Unpack 75
- 6.2.2 Step 2: Power Down 75
- 6-4 Hardware Installation 76
- 6-6 Hardware Installation 78
- 6.2.5 Step 5: Set Termination 80
- Installation Steps 6-9 81
- 6-10 Hardware Installation 82
- Installation Steps 6-11 83
- • Tape drive set to SCSI ID 2 84
- Installation Steps 6-13 85
- Installation Steps 6-15 87
- 6-16 Hardware Installation 88
- Installation Steps 6-17 89
- 6-18 Hardware Installation 90
- 6.2.11 Step 11: Power Up 92
- 6.3 Summary 93
- 6-22 Hardware Installation 94
- Chapter 7 95
- Installing and Configuring 95
- Clusters 95
- 7.2 Benefits of Clusters 96
- Advanced Server 97
- 7.3.2 Network Requirements 98
- 7.4 Cluster Installation 99
- • Set up networks 100
- • Set up disks 100
- 7.4.3 Setting Up Networks 101
- Cluster Installation 7-9 103
- Cluster Installation 7-13 107
- Cluster Installation 7-15 109
- Cluster Installation 7-17 111
- Cluster Installation 7-19 113
- Cluster Installation 7-21 115
- Cluster Installation 7-23 117
- Cluster Installation 7-25 119
- 7.4.18 Verifying Installation 120
- 7.5 Installing SCSI Drives 121
- Chapter 8 123
- Troubleshooting 123
- Firmware Initializing 124
- 8.2 BIOS Boot Error Messages 125
- 8.3 Other BIOS Error Messages 127
- 8.4 Other Potential Problems 127
- 8-8 Troubleshooting 130
- Appendix A 131
- SCSI Cables and 131
- Connectors 131
- SCSI devices is shown below 133
- Table A.1 SCSI Cable Vendors 136
- Appendix B 141
- Audible Warnings 141
- B-2 Audible Warnings 142
- Appendix C 143
- Glossary 143
- C-2 Glossary 144
- C-4 Glossary 146
- C-6 Glossary 148
- C-8 Glossary 150
- C-10 Glossary 152
- IX-2 Index 154
- Index IX-3 155
- IX-4 Index 156
- Customer Feedback 157
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