Dell PowerEdge RAID Controller H800 Manual de usuario Pagina 33
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Storage Controller Features 33
NOTE: The total number of physical disks in a disk group cannot exceed 32. You
cannot perform RAID level migration and/or expansion on RAID levels 10, 50, and
60.
Fault Tolerance Features
The list of features of the controller cards that provide fault tolerance to
prevent data loss is as follows:
• Support for SMART
• Support for Patrol Read
• Redundant path support (for PERC H800 only)
• Physical disk failure detection
• Physical disk rebuild using hot spares
• Parity generation and checking (for RAID 5, 50, 6, and 60 only)
RAID 5 RAID 6 3 or more 4 or more Yes At least one disk needs
to be added for dual
distributed parity data.
RAID 6 RAID 0 4 or more 4 or more Yes Converts to a
non-redundant
virtual disk and
reclaims disk space
used for distributed
parity data.
RAID 6 RAID 5 4 or more 4 or more Yes Removes one set of
parity data and
reclaims disk space
used for it.
RAID 6 RAID 6 4 5 or more Yes Increases capacity by
adding disks
Table 3-2. RAID Level Migration
(continued)
Source
RAID
Level
Target
RAID
Level
Required
Number of
Physical Disks
(Beginning)
Number of
Physical
Disks (End)
Capacity
Expansion
Possible
Description
PERC7.2_UG.book Page 33 Thursday, March 3, 2011 2:14 PM
- User’s Guide 1
- Notes, Cautions, and Warnings 2
- Contents 3
- 4 Contents 4
- 6 Contents 6
- 8 Contents 8
- B Corporate Contact Details 9
- 10 Contents 10
- Safety Instructions 11
- Battery Disposal 13
- 14 Safety Instructions 14
- Overview 15
- Operating System Support 16
- RAID Description 17
- RAID Terminology 18
- Disk Mirroring 19
- Spanned RAID Levels 19
- Parity Data 19
- Storage Controller Features 21
- Using the SMART Feature 24
- Initializing Virtual Disks 25
- Consistency Checks 26
- Disk Roaming 26
- Disk Migration 27
- Write-Back and Write-Through 29
- Employed 30
- Reconfiguring Virtual Disks 31
- Fault Tolerance Features 33
- Physical Disk Hot Swapping 34
- Controller Cache Preservation 36
- Cache Data Recovery 37
- Patrol Read 38
- Installing and Configuring 41
- Hardware 41
- Owner's Manual 42
- Hardware Owner’s Manual 46
- Card in Dell Blade Systems 49
- Hardware Owner's 51
- 1 DIMM 2 DIMM support 54
- DIMM of a PERC H800 Adapter 60
- H800 Cards 63
- PERC H800 Adapter 64
- Driver Installation 69
- Pre-Installation Requirements 70
- Installation 71
- R2 Installation 72
- Windows Server 2003 73
- Installing Linux Driver 74
- Update Diskette 77
- <package name> 78
- Installing Solaris Driver 79
- BIOS Configuration Utility 82
- Menu Navigation Controls 83
- Setting Up Virtual Disks 85
- Virtual Disk Management 88
- Checking Data Consistency 91
- Configuration View Screen 93
- Managing Preserved Cache 96
- Managing Dedicated Hot Spares 97
- Deleting Virtual Disks 98
- Deleting Disk Groups 98
- Clearing the Configuration 99
- (continued) 101
- Management" on page 88 104
- Physical Disk Actions 106
- Controller Management Actions 107
- Physical Disk Management 108
- Creating Global Hot Spares 109
- Restrictions and Limitations 111
- Controller Management 112
- Enabling BIOS Stop on Error 113
- Enabling Auto Import 113
- Configuring and Managing RAID 114
- CacheCade 115
- Create CacheCade Virtual Disk 116
- CacheCade 117 117
- Delete CacheCade Virtual Disk 118
- 120 CacheCade 120
- Security Key and RAID 121
- Management 121
- Security Key Management 122
- Change Key 124
- Delete Key 125
- Migration 126
- Instant Secure Erase 128
- Secured Foreign Import Errors 128
- Troubleshooting 131
- 132 Troubleshooting 132
- 134 Troubleshooting 134
- <Ctrl><R> 134
- 136 Troubleshooting 136
- 138 Troubleshooting 138
- CAUTION: The 138
- CAUTION: MBE 139
- NOTE: A similar 139
- 140 Troubleshooting 140
- NOTE: This message may 140
- Memory Errors 141
- Preserved Cache State 142
- General Issues 142
- Physical Disk Related Issues 143
- 144 Troubleshooting 144
- SMART Errors 146
- Replace Member Errors 147
- Linux Operating System Errors 148
- 150 Troubleshooting 150
- Disk Carrier LED Indicators 151
- 152 Troubleshooting 152
- Regulatory Notices 153
- 154 Regulatory Notices 154
- Glossary 157
- Glossary 159 159
- Glossary 161 161
- Glossary 163 163
- Glossary 165 165
- Glossary 167 167
- RAID Level Migration 168
- RAID Management Utility 168
- Read-Ahead 168
- Rebuild Rate 168
- Glossary 169 169
- Glossary 171 171
- Glossary 173 173
- Write-Through 174
- Index 175 175
- Index 177 177
- 178 Index 178
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