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Log states
The DR group log state depends on the Write mode as shown below.
Log statesReplication write mode
Enhanced asynchronous
• Normal. All source disks in the DR group are continuously logging and
merging.
• Running down. All source disks in the DR are merging as the result of a
requested transition to synchronous mode. See Write mode transitions.
Basic asynchronous
• Not in use. No source virtual disk in the DR group is logging or merging.
• Logging. At least one source virtual disk in the DR group is logging but
none are merging.
• Merging. At least one source virtual disk in the DR group is merging.
Synchronous
• Not in use. No source virtual disk in the DR group is logging or merging.
• Logging. At least one source virtual disk in the DR group is logging but
none are merging.
• Merging. At least one source virtual disk in the DR group is merging.
Log contents
A small portion of log space is reserved for array commands. The largest portion stores host data
that is written to all of the virtual disks in the disk group.
Log and disk group planning
When you create a DR group pair, a log disk is automatically created for the source and destination
DR group. An important planning factor is selecting the disk groups in which to create the log
disks.
Disk group category
• Select a disk group whose category is appropriate to the write mode of the DR group pair.
See Write mode and Online and near-online disk groups. You can use HP P6000 Command
View to determine the category the disk groups that are displayed in the replication manager.
Recommended disk group categoryWrite mode
OnlineEnhanced asynchronous
Near-onlineBasic asynchronous
Near-onlineSynchronous
• If near-online disk groups cannot be made available, use the online disk groups that have the
most free space.
Disk group size
• When selecting a disk group, ensure there is space for log disks to expand to their maximum
size. See Log size.
• When creating disk groups, plan for the impacts of DR group logs.
Log size
When a DR group pair is created, the size of each log disk (source and destination) is 136 MB
(Vraid1) by default. The initial size is also called its minimum size.
86 DR groups
- User Guide 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- 8 Contents 8
- Contents 9 9
- 10 Contents 10
- Contents 11 11
- 12 Contents 12
- Prerequisites 13
- Compatibility 13
- Logging in to the GUI 13
- Capabilities 14
- Local replication 15
- Remote replication 15
- Server software 15
- Host agent software 16
- CLUI software 16
- GUI window overview 18
- Configuration window 18
- Content pane 19
- CLUI window (in the GUI) 19
- Right-click actions 20
- General shortcuts 20
- Button shortcuts 20
- List view shortcuts 20
- Menu bar 21
- Navigation pane 22
- Online help 22
- Status bar 22
- Configuration 23
- CLUI ports configuration 24
- RSM database cleanup 24
- Logs configuration 25
- Simulation mode 26
- RSM database 27
- About exports 28
- About imports 28
- Exporting an RSM database 28
- Importing an RSM database 29
- Completing imports 30
- Troubleshooting 31
- Illegal characters 32
- Troubleshooting 33 33
- Troubleshooting 37 37
- Troubleshooting–HP-UX 38
- Troubleshooting 39 39
- Troubleshooting–Linux 40
- Troubleshooting–Tru64 UNIX 40
- 2 Replication resources 41
- Filtering displayed resources 42
- Global refresh monitor 43
- Refreshing resources (global) 45
- Resource concepts 46
- Resource states 47
- Licenses 49
- ◦ Expiration date (if any) 50
- Security Credentials 51
- 52 Replication resources 52
- Topology views 54
- Displaying the topology tab 55
- DR groups topology view 56
- Host volumes topology view 57
- Features 58
- Virtual disks topology view 59
- Filters for topology views 61
- Tips (topology views) 61
- Pinned view 62
- Clear all pins action 62
- Toggle labels action 62
- 3 DR groups 63
- Create DR group 64
- Configure DR group 64
- Delete DR group 65
- Edit DR group 65
- Manage sets of DR groups 65
- Other DR group tasks 65
- View DR groups 65
- DR group properties summary 66
- DR group views 66
- Deleting a DR group pair 68
- Editing DR group properties 68
- Failing over a DR group pair 69
- Forcing a full copy 70
- Resuming a DR group pair 72
- Suspending a DR group pair 73
- Using DR groups 74
- Creating and deleting 75
- Editing (setting) properties 75
- Viewing DR groups 76
- Viewing DR group properties 76
- DR group concepts 77
- DR group names 78
- Auto suspend on link-down 79
- Auto suspend on full copy 79
- Controller software versions 80
- Cascaded replication 81
- Copy state 81
- Destination access mode 81
- DR group states and icons 81
- Failover 82
- DR group concepts 83 83
- Full copy mode 84
- I/O throttling 85
- Job command processing 85
- Log and disk group planning 86
- Log size 86
- Log disk and states 88
- Low-level refresh 89
- Managed sets of DR groups 89
- Operational state - blocked 90
- Suspend on failover 92
- Suspension state 92
- Write mode transitions 93
- 94 DR groups 94
- 4 Enabled hosts 95
- Enabled hosts views 97
- Adding enabled hosts 97
- Adding VM servers 98
- Changing enabled host OS type 99
- Deleting enabled hosts 99
- Deleting VM servers 100
- Considerations 102
- Procedure 102
- Viewing enabled hosts 103
- Viewing VM server properties 103
- VM server actions summary 104
- VM server properties summary 104
- Enabled host concepts 105
- Host names and ports 106
- VM servers 106
- 5 Host volumes 107
- Host volume groups 108
- Host disk devices 108
- Dynamic capacity volumes 108
- Replicas 109
- Create host volume resources 109
- Delete host volume resources 109
- Manage sets of resources 110
- Mount host volume resources 110
- Host volume views 112
- List view 113
- 114 Host volumes 114
- Creating host volumes 116
- Creating local replicas 116
- Creating round-robin replicas 117
- Deleting replicas 117
- Editing replica properties 118
- Using snapclones 122
- Using snapshots 122
- Using raw disks 123
- Viewing host volume resources 124
- Working with host volumes 127 127
- Host volume concepts 128
- Host volumes FAQ 129
- Disk Devices 129
- File system types 130
- Instant Restore 130
- Automatic LUN assignment 131
- Partitions and slices 132
- Linux partitions 133
- Solaris slices 133
- Raw disks 134
- Local replication wizard 135
- Replica repository 135
- Round robin replicas (wizard) 135
- Snapclones (host volume) 136
- Snapshots (host volume) 136
- Snapshot FAQ 136
- Types (components) 137
- Dynamic capacity management 138
- DC-Management support 140
- 142 Host volumes 142
- DC-Management FAQ 143
- DC-Management best practices 144
- DC-Management examples 144
- Working with jobs 145
- Job Planning - Tru64 UNIX 146
- Job actions cross reference 147
- Job properties summary 148
- Job views 148
- Aborting job instances 149
- Continuing job instances 150
- Copying jobs 150
- Creating jobs 150
- Deleting jobs 151
- Deleting job instances 151
- Developing jobs 152
- Editing jobs 152
- Exporting jobs 152
- CLUI Procedure 153
- Adding a command 153
- Copying lines 153
- Changing one line 153
- Generating job templates 155
- Importing jobs 156
- Importing legacy jobs 156
- Pausing job instances 161
- Resource is not selectable 161
- Running jobs 162
- Scheduling job events 163
- Editing scheduled job events 164
- Choosing a run interval 165
- Removing scheduled job events 165
- Validating jobs 166
- Viewing job status 167
- Job concepts 168
- Jobs, templates, and commands 169
- Job instances 169
- Aborted job instances 170
- Arguments 170
- Argument lists 170
- Assignments (variables) 170
- Branches 171
- Commands 171
- Command result values 172
- Job commands list 178
- Job templates list 184
- Pause and continue 185
- Continue 186
- DR groups 186
- Enabled hosts 187
- Host volumes 187
- Storage systems 187
- Status and states 188
- Transactions 188
- Validation 189
- Wait/nowait argument 190
- Job templates 191
- Template options 192
- Template summary 193
- Comments 194
- Template Options 196
- 7 Managed sets 226
- Managed set views 227
- Creating managed sets 228
- Deleting managed sets 228
- Renaming managed sets 229
- Viewing managed sets 229
- Managed sets concepts 230
- General guidelines 231
- 8 Storage systems 232
- Storage system views 233
- Launching the device manager 234
- Setting DR Protocol Type 235
- Storage system concepts 236
- Storage system concepts 237 237
- Disk groups 238
- Remote replication tunnels 238
- Storage system types 239
- 9 Virtual disks 240
- Create virtual disks 241
- Delete virtual disks 241
- Edit virtual disks 241
- Manage virtual disks 241
- Mount virtual disks 242
- Other virtual disk tasks 242
- Replicate virtual disks 242
- Validate virtual disks 242
- View virtual disks 242
- Virtual disk views 243
- Creating a DR group pair 244
- Creating mirrorclones 245
- Creating snapshots (standard) 246
- Migrating a virtual disk 247
- Creating virtual disks 247
- Deleting virtual disks 248
- Detaching mirrorclones 248
- Fracturing mirrorclones 249
- Presenting virtual disks 251
- Resynchronizing mirrorclones 253
- Migrating a mirrorclone 254
- Unpresenting virtual disks 254
- Virtual disk concepts 255
- Controller software features 256
- Cache policies 256
- Containers 257
- Container guidelines 258
- Cross Vraid replication 258
- Cross Vraid FAQ 258
- Cross Vraid guidelines 260
- Virtual disk concepts 261 261
- Instant restore 262
- Mirrorclones - fractured 263
- Mirrorclones - synchronized 264
- Mirrorclone FAQ 265
- Mirrorclone guidelines 265
- Mirrorclone states 267
- Normalization 267
- Preferred controller 267
- Presentation (to host) 268
- Remote replication guidelines 268
- Redundancy (Vraid) levels 269
- Snapclones 269
- Snapclone FAQ 270
- Snapclone guidelines 271
- Snapshots 271
- Snapshot guidelines 272
- Snapshots per virtual disk 273
- Thin provisioning 274
- Mounting 275
- 10 Events 276
- Refreshing display panes 277
- Organizing displayed events 277
- Viewing events 278
- Viewing the trace log 278
- Event concepts 279
- Events log 280
- Event log views 281
- Event severity 281
- Trace log 281
- Accessing the CLUI via GUI 282
- CLUI documentation 282
- Reusing CLUI commands 284
- Using CLUI help 284
- Displaying the full help menu 285
- Release history 286
- Contacting HP 288
- Related information 288
- Locating documentation 289
- Glossary 290
- 292 Glossary 292
- 294 Index 294
- 296 Index 296
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