Dell Dimension E521 Manuel d'utilisateur Page 29
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Setting Up and Using Your Computer 29
About RAID Configurations
This section provides an overview of the RAID configuration you may have selected when you purchased
your computer. Your computer supports RAID level 1. A RAID level 1 is recommended for users that
desire a high level of data integrity.
The drives in a RAID configuration should be the same size in order to ensure that the larger drive does
not contain unallocated (and therefore unusable) space.
RAID Level 1 Configuration
RAID level 1 uses a data-redundancy storage technique known as mirroring to enhance data integrity.
When data is written to the primary drive, the data is also duplicated, or mirrored, on the second drive in
the configuration. A RAID level 1 configuration sacrifices high data-access rates for its data redundancy
advantages.
If a drive failure occurs, subsequent read and write operations are directed to the surviving drive. A
replacement drive can then be rebuilt using the data from the surviving drive.
NOTE: In a RAID level 1 configuration, the size of the configuration is equal to the size of the smallest drive in the
configuration.
hard drive 1
segment 1
segment 2
segment 3
hard drive 2
segment 4
segment 5
segment 6
segment 1 duplicated
segment 2 duplicated
segment 3 duplicated
segment 4 duplicated
segment 5 duplicated
segment 6 duplicated
serial ATA RAID
configured for
RAID level 1
book.book Page 29 Monday, July 23, 2007 3:47 PM
- Owner’s Manual 1
- Notes, Notices, and Cautions 2
- Abbreviations and Acronyms 2
- Contents 3
- 4 Contents 4
- 6 Contents 6
- 8 Contents 8
- Finding Information 9
- 10 Finding Information 10
- Front View of the Computer 11
- Back View of the Computer 13
- Back Panel Connectors 14
- Setting Up a Printer 15
- Connecting to the Internet 16
- Playing CDs and DVDs 18
- Adjusting the Volume 19
- Adjusting the Picture 19
- Copying CDs and DVDs 20
- Helpful Tips 21
- Connecting Two Monitors 23
- Connecting a TV 24
- Changing the Display Settings 25
- Hibernate Mode 27
- Power Options Properties 27
- Advanced Tab 28
- Hibernate Tab 28
- About RAID Configurations 29
- Using Nvidia MediaShield 31
- Solving Problems 33
- Drive Problems 34
- Hard drive problems 35
- Error Messages 36
- Keyboard Problems 37
- Lockups and Software Problems 38
- Media Card Reader Problems 40
- Memory Problems 41
- Mouse Problems 41
- Network Problems 42
- Power Problems 43
- Printer Problems 44
- Scanner Problems 45
- Sound and Speaker Problems 46
- Video and Monitor Problems 47
- 48 Solving Problems 48
- Troubleshooting Tools 49
- 50 Troubleshooting Tools 50
- Dell Diagnostics 52
- What Is a Driver? 53
- Identifying Drivers 53
- Reinstalling Drivers 54
- Troubleshooting Tools 55 55
- Using Microsoft 56
- Windows XP System Restore 56
- Using Dell PC Restore 57
- Removing Dell PC Restore 58
- Using the Operating System CD 59
- 60 Troubleshooting Tools 60
- Removing the Computer Cover 63
- Inside View of Your Computer 64
- System Board Components 65
- Installing Memory 68
- Removing Memory 69
- PCI Cards 70
- Installing a PCI Card 71
- Removing a PCI Card 75
- PCI Express Cards 76
- Removing a PCI Express Card 80
- Drive Panel 81
- Replacing the Drive Panel 84
- Connecting Drive Cables 86
- Drive Interface Connectors 86
- Hard Drives 87
- Installing a Hard Drive 88
- Adding a Second Hard Drive 91
- Installing a Floppy Drive 94
- Media Card Reader 96
- CD/DVD Drive 100
- Installing a CD/DVD Drive 102
- Replacing the Battery 104
- Replacing the Computer Cover 105
- Removing and Installing Parts 106
- Appendix 107
- 108 Appendix 108
- 110 Appendix 110
- System Setup 111
- System Setup Options 112
- 114 Appendix 114
- Performance 114
- Power Management 114
- Maintenance 115
- POST Behavior 115
- Boot Sequence 116
- Clearing Forgotten Passwords 118
- Clearing CMOS Settings 119
- Cleaning Your Computer 119
- Floppy Drive 120
- CDs and DVDs 120
- FCC Notice (U.S. Only) 121
- Contacting Dell 122
- 124 Appendix 124
- 126 Appendix 126
- 128 Appendix 128
- 130 Appendix 130
- 132 Appendix 132
- 134 Appendix 134
- 136 Appendix 136
- 138 Appendix 138
- 140 Appendix 140
- 142 Appendix 142
- 144 Appendix 144
- Glossary 145
- 146 Glossary 146
- 148 Glossary 148
- 150 Glossary 150
- 152 Glossary 152
- 154 Glossary 154
- Index 155 155
- 156 Index 156
- Index 157 157
- 158 Index 158
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