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Understanding Drive Arrays D-3
Daz-9-16.EPS
Physical Drives
Logical
Drive 1
Logical
Drive 2
Drive Array
Drive 1 Drive 2 Drive 3 Drive 4 Drive 5 Drive 6
Figure D-3. Drive Array with six physical drives and two logical drives
The same physical drives may also be arranged into separate arrays as
illustrated in Figure D-4. The same controller can handle both arrays.
Daz-9-17.EPS
Physical Drives
Logical
Drive 1
Logical
Drive 2
Drive Array 1
Drive 1 Drive 2 Drive 3 Drive 4 Drive 5 Drive 6
Drive Array 2
Figure D-4. Two Drive Arrays with six physical drives
- User Guide 1
- Part Number 146915-001 1
- Compaq Computer Corporation 1
- Contents 3
- Chapter 2 4
- Chapter 3 4
- Chapter 4 4
- Chapter 5 5
- Chapter 6 5
- Chapter 7 5
- Appendix A 6
- Appendix B 7
- Appendix C 7
- Appendix D 7
- Appendix E 7
- Appendix F 8
- Appendix G 8
- Appendix H 8
- About This Guide 9
- Symbols in Text 10
- Symbols on Equipment 11
- Getting Help 11
- Compaq Technical Support 12
- Compaq Website 12
- Compaq Authorized Reseller 12
- Features 13
- Smart Array 431 Controller 15
- Fault Tolerance 16
- Drive Movement 17
- Read-Cache Memory 17
- SCSI Support 17
- Array Configuration Utilities 18
- Features 1-7 19
- Installation Preparation 20
- Option Kit Contents 21
- Guidelines 22
- Installation 23
- Drive Considerations 24
- Changing the Fault Tolerance 25
- Moving Drives Offline 26
- Updating the Firmware 27
- ROMPaq Diskettes 28
- Running System ROMPaq 29
- Running Options ROMPaq 30
- Updating the Firmware 3-5 31
- Information 33
- Preparing the Server 34
- SCSI Port Utilization 35
- SCSI Termination 36
- SCSI IDs 36
- Non-Hot-Plug Drives 37
- External SCSI Connections 38
- External Cables 38
- Non-Offset VHDCI 39
- Offset VHDCI 39
- External Cabling Instructions 40
- Completing the Installation 41
- Chapter 43
- Materials Needed 44
- Creating Diskettes 44
- Starting the System 45
- Configuration Utility 45
- Configuring the Controller 46
- Functionality 48
- Restrictions 48
- Creating a Logical Drive 49
- Array Configuration Utility 50
- Before You Begin 51
- Windows NT 52
- Configuration Wizards 53
- Online Help 53
- Creating a New Array—Example 54
- Figure 6-7. Example Array A 57
- Capacity Expansion 60
- Capacity Extension 63
- Size Migration Procedure 66
- Size Migration -- Example 66
- Menu Bar 68
- Controller Selection Box 69
- More Information Button 70
- Drive View Buttons 70
- Controller Buttons 71
- Array Buttons 71
- Logical Drive Buttons 72
- Create Array Screen 73
- Create Logical Drive Screen 74
- Stripe Size 76
- Auto-configuration 77
- Custom Configuration 77
- Expand an Array 79
- Add or Configure Spare Drives 79
- Handling Disk Drive Failures 81
- Novell NetWare 84
- Additional Information 85
- Installation Procedure 85
- (CPQONLIN) 86
- Microsoft Windows NT 4.0 87
- Windows NT 4.0 89
- A:\setup 91
- SCO OpenServer 5 92
- Accessing the Information 93
- SCO UnixWare 2.1 or Later 94
- IBM OS/2 95
- Installation Procedures 96
- Controller Ordering 97
- Partitioning 98
- Command Line Switches 99
- BASEDEV=CPQARRAY.ADD /V 100
- BASEDEV=CPQARRAY.ADD /A:2 /I 100
- Updating the Compaq Insight 101
- Manager Agents 101
- Regulatory Compliance Notices 102
- Class A Equipment 103
- Class B Equipment 103
- Modifications 104
- European Union Notice 105
- Japanese Notice 105
- Electrostatic Discharge 106
- Grounding Methods 107
- Specifications 108
- Table C-2 109
- Understanding Drive Arrays 110
- Figure D-2 111
- Drive Arrays 113
- Logical Drives 113
- Drive Array Benefits 114
- Table D-1 115
- RAID Level Characteristics 115
- DATADATADATA 116
- P = Parity 116
- WAR2-053.AI, 9-3.EPS 116
- Drive Mirroring (RAID 1) 117
- No Fault tolerance (RAID 0) 118
- DATADATADATADATA 119
- Optimized Request Management 120
- Adding Storage Capacity 121
- Disk Drive Capacity Upgrades 124
- Data Reliability 125
- Drive Parameter Tracking 126
- Drive Failure Alert Features 126
- Interim Data Recovery 126
- Automatic Data Recovery 127
- Hot-Pluggable Drives 127
- Controller Duplexing 130
- POST Error Messages 141
- Questions and Answers 147
- Index 3 151
- Index 5 153
- Index 7 155
- Index 9 157
- Index 11 159
- Index 13 161
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