Dell OpenManage Server Administrator Version 7.3 Manual de usuario Pagina 30
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RAID 50 characteristics:
• Groups
n
*
s
disks as one large virtual disk with a capacity of
s
*(
n
-1) disks, where
s
is the number of spans and
n
is the number of disks within each span.
• Redundant information (parity) is alternately stored on all disks of each RAID 5 span.
• Better read performance, but slower write performance.
• Requires as much parity information as standard RAID 5.
• Data is striped across all spans. RAID 50 is more expensive in terms of disk space.
RAID Level 60 (Striping Over RAID 6 Sets)
RAID 60 is striping over more than one span of physical disks that are configured as a RAID 6. For example, a RAID 6 disk
group that is implemented with four physical disks and then continues on with a disk group of four more physical disks
would be a RAID 60.
30
- Notes, Cautions, and Warnings 2
- Copyright 2
- Contents 3
- Overview 15
- Supported Controllers 16
- Supported Enclosures 16
- Getting Started 19
- User Privileges 20
- Displaying The Online Help 20
- Common Storage Tasks 21
- Understanding RAID Concepts 23
- RAID Levels 24
- Concatenation 25
- RAID Level 0 (Striping) 26
- RAID Level 1 (Mirroring) 27
- Storage Health 35
- Hot Spare Protection Policy 35
- Storage Component Severity 36
- Alerts Or Events 37
- What Is PCIe-SSD? 39
- PCIe SSD Features 39
- PCIe Extender Cards 40
- Physical Device Properties 40
- Physical Device Tasks 42
- Exporting The Log 44
- PCIe SSD SubSystem Health 45
- Related Links 46
- Fluid Cache Disks 48
- Fluid Cache Pool 49
- Server Administrator 50
- Messages Reference Guide 50
- Cache I/O Statistics 51
- License Settings 51
- Table 11. License Settings 52
- Storage Properties 53
- Global Tasks 53
- Storage Controller Properties 54
- Storage Components 56
- RAID Controller Features 58
- Read Policy 59
- Write Policy 59
- Cache Policy 60
- Disk Cache Policy 60
- Firmware Or Driver Versions 61
- Controller Health 62
- Server Administrator Readme 63
- Controller Tasks 66
- Rescanning The Controller 67
- Creating A Virtual Disk 67
- Enabling The Controller Alarm 67
- Testing The Controller Alarm 68
- Setting The Rebuild Rate 68
- <mmdd> 70
- Setting The Reconstruct Rate 78
- and Enclosure 80
- Setting The Patrol Read Mode 81
- Server 83
- Managing The Preserved Cache 85
- Encryption Key 86
- Managing The Encryption Key 87
- Converting To Non-RAID Disks 88
- Viewing Available Reports 89
- Viewing Slot Occupancy Report 90
- Enclosures And Backplanes 93
- SMART Thermal Shutdown 94
- Enclosure Physical Disks 94
- Enclosure Fans 94
- Enclosure Power Supplies 95
- Enclosure Temperature Probes 96
- EMM Properties 98
- Enabling The Enclosure Alarm 102
- Setting Asset Data 102
- View Slot Occupancy Report 104
- Enclosure Management 105
- Enclosure Components 106
- Connectors 107
- Connector Health 108
- Rescanning The Connector 109
- Connector Components 111
- Path Health 111
- Tape Drive 113
- RAID Controller Batteries 115
- Battery Tasks 116
- Battery — Available Tasks 116
- Delay The Battery Learn Cycle 117
- For SAS Controllers 120
- Other Disk Procedures 121
- Reference Guide 123
- Physical Disk Tasks 125
- Removing Dead Segments 126
- Preparing To Remove 126
- Rebuilding Data 127
- Canceling A Rebuild 127
- Enabling Revertible Hot Spare 129
- Convert To RAID Capable Disk 130
- Convert To Non-RAID Disk 130
- Virtual Disks 131
- Creating Virtual Disks 134
- And Capacity Expansion 135
- Virtual Disk Properties 139
- Virtual Disk Tasks 141
- Reconfiguring A Virtual Disk 142
- s*(n-1) 148
- Span Edit 151
- Slow And Fast Initialize 154
- Deleting A Virtual Disk 155
- Renaming A Virtual Disk 156
- Split Mirror 157
- Unmirror 158
- System To Another 163
- Understanding Hot Spares 165
- Controllers 168
- Managing The CacheCade 171
- CacheCade Properties 172
- Creating A CacheCade 172
- Resizing The CacheCade 173
- Renaming The CacheCade 173
- Deleting The CacheCade 173
- Troubleshooting 175
- Drivers And Firmware 176
- Isolate Hardware Problems 176
- Replacing A Failed Disk 176
- Replacing The Disk 177
- Assigning A Hot Spare 177
- Virtual Disk Troubleshooting 178
- Cannot Create A Virtual Disk 179
- Redundant Virtual Disks 180
- PCIe SSD Troubleshooting 183
- Fluid Cache For DAS 184
- Through operational mode 185
- Frequently Asked Questions 187
- Which Controllers Do I Have? 188
- How Do I Turn Off An Alarm 188
- Supported Features 189
- S300 Controllers 218
- Enclosure And Backplane Tasks 222
- Components 225
- Not Included) 226
- Failed Or Rebuilding 227
- Connection Removed 228
- Enclosure 229
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