Dell Dimension 8400 Manuel d'utilisateur Page 21
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Setting Up and Using Your Computer 21
your computer, then each pair of drives can be made into RAID level 0 or RAID level 1 volumes.
The drives should be the same size in order to ensure that the larger drive does not contain
unallocated (and therefore unusable) space.
NOTE: RAID levels do not represent a hierarchy. A RAID level 1 configuration is not inherently better or
worse than a RAID level 0 configuration.
RAID Level 0
RAID level 0 uses a storage technique known as "data striping" to provide a high data access rate.
Data striping is a method of writing consecutive segments, or stripes, of data sequentially across
the physical drives to create a large virtual drive. Data striping allows one of the drives to read data
while the other drive is searching for and reading the next block.
Another advantage of a RAID level 0 configuration is that it utilizes the full capacities of the drives.
For example, if you have two 120-GB drives installed, you have 240 GB on which to store data.
NOTICE: Because RAID level 0 provides no data redundancy, if one drive fails, then the data on the
other drive is also inaccessible. Therefore, ensure that you perform regular backups when you use a
RAID level 0 configuration.
RAID Level 1
RAID level 1 uses a data-redundancy storage technique known as "mirroring." When data is written
to the primary drive, it is then duplicated, or mirrored, on the other drive. A RAID level 1
configuration sacrifices high data access rates for its data redundancy advantages.
hard drive 1
segment 1
segment 3
segment 5
hard drive 2
segment 2
segment 4
segment 6
serial ATA RAID
configured for
RAID level 0
- Dell™ Dimension™ 8400 Series 1
- Notes, Notices, and Cautions 2
- Contents 3
- 2 Solving Problems 4
- 3 Advanced Troubleshooting 5
- 5 Appendix 7
- 8 Contents 8
- Finding Information 9
- 10 Finding Information 10
- Setting Up a Printer 11
- Connecting a Parallel Printer 12
- Connecting to the Internet 13
- Playing CDs or DVDs 15
- Adjusting the Volume 16
- Copying CDs and DVDs 17
- Using Blank CD-Rs and CD-RWs 18
- Helpful Tips 18
- Connecting Two Monitors 19
- About Your RAID Configuration 20
- RAID Level 0 21
- RAID Level 1 21
- Deleting a RAID Volume 24
- Creating a RAID 0 Volume 25
- Creating a RAID 1 Volume 25
- Migrating to a RAID 0 Volume 26
- Migrating to a RAID 1 Volume 27
- Creating a Spare Hard Drive 27
- Power Management 29
- Hibernate Mode 30
- Power Options Properties 30
- Hyper-Threading 31
- Solving Problems 33
- Drive Problems 34
- Hard drive problems 35
- Error Messages 36
- IEEE 1394 Device Problems 37
- Keyboard Problems 38
- Lockups and Software Problems 38
- The computer stops responding 39
- A program stops responding 39
- A program crashes repeatedly 39
- A solid blue screen appears 39
- Memory Problems 40
- Mouse Problems 41
- Network Problems 42
- Power Problems 42
- Printer Problems 43
- Scanner Problems 44
- Sound and Speaker Problems 45
- Video and Monitor Problems 46
- 48 Solving Problems 48
- Advanced Troubleshooting 49
- Dell Diagnostics 52
- Dell Diagnostics Main Menu 53
- What Is a Driver? 54
- Identifying Drivers 54
- Reinstalling Drivers 55
- Using Microsoft 56
- Windows XP System Restore 56
- Enabling System Restore 58
- Front View 61
- Back View 63
- Reattaching the Hinge Arms 65
- Reattaching the Front Door 68
- Opening the Computer Cover 69
- Inside Your Computer 70
- System Board Components 71
- DDR2 Memory Overview 72
- Installing Memory 73
- Removing Memory 75
- PCI Cards 76
- Removing a PCI Card 80
- PCI Express Cards 81
- Removing a PCI Express Card 85
- Card Fan 86
- Connecting Drive Cables 89
- Hard Drive 90
- Removing a Hard Drive 91
- Installing a Hard Drive 92
- Adding a Second Hard Drive 93
- Front-Panel Inserts 94
- Installing a Floppy Drive 98
- CD/DVD Drive 99
- Removing a CD/DVD Drive 100
- Installing a CD/DVD Drive 101
- Replacing the Battery 103
- Closing the Computer Cover 104
- Removing and Installing Parts 106
- Appendix 107
- 108 Appendix 108
- 110 Appendix 110
- System Setup 111
- Entering System Setup 112
- System Setup Options 113
- Maintenance 115
- POST Behavior 115
- Boot Sequence 116
- Clearing Forgotten Passwords 117
- Clearing CMOS Settings 119
- Cleaning Your Computer 119
- Floppy Drive 120
- CDs and DVDs 120
- FCC Notices (U.S. Only) 121
- Contacting Dell 123
- 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
- Index 141 141
- 142 Index 142
- Index 143 143
- 144 Index 144
- Index 145 145
- 146 Index 146
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