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Network options
The Network tab consists of settings that control network communications. Any changes made to this tab will not take effect
until the Storage Mirroring daemon has been restarted on the specified machine.
Interface
Default Address—On a machine with multiple NICs, you can specify which address Storage Mirroring traffic will
use. It can also be used on machines with multiple IP addresses on a single NIC.
Default Protocol—The default protocol for all Storage Mirroring communications is the TCP/IP protocol. In the
future, Storage Mirroring may support other communication protocols.
Service Listen Port—Storage Mirroring servers use the Service Listen Port to send and receive commands and
operations between two Storage Mirroring servers.
Heartbeat Transmit Port—A Storage Mirroring server sends its heartbeats to the Heartbeat Transmit Port.
Status Listen Port—Storage Mirroring servers use the Status Listen Port to listen for requests from the Management
Console to update the at-a-glance monitoring information. For detailed information on at-a-glance monitoring, see .
Heartbeat
All Storage Mirroring servers, sources and targets, transmit a heartbeat. This heartbeat allows other Storage Mirroring
machines, including Storage Mirroring clients, to locate and identify Storage Mirroring servers. The heartbeat is a
broadcast UDP transmission. This heartbeat can be disabled, but Storage Mirroring will not auto-detect the Storage
Mirroring machines to populate the Management Console.
Time Between Heartbeats—This is the number of seconds between heartbeats. By default this is set to 3
seconds. If you set this option to
0, the heartbeats are disabled.
Missed Heartbeat Limit—This is the number of heartbeats which can be missed before transmission is stopped
and data is queued on the source.
Show Heartbeat Messages in Logger—This check box enables the heartbeat messages in the LogViewer
monitoring utility. Enabling this option will cause your logs to fill up faster. For detailed information on LogViewer,
see LogViewer on page 13-32.
- HP StorageWorks Storage 1
- Mirroring for Linux 1
- User’s Guide 1
- Table of Contents 3
- Intended Audience 9
- Organization of This Guide 9
- Online References 10
- Storage Mirroring Features 12
- Storage Mirroring Operations 13
- Replication 14
- Failure monitoring/failover 15
- Restoration 16
- Sample Configurations 17
- One-to-One, Active/Active 18
- Many-to-One 19
- One-to-Many 20
- Description 21
- Applications 21
- Considerations 21
- Single Machine 22
- 2 X Management Console 23
- Understanding the Display 24
- Management Console toolbar 26
- Stopping the daemon 27
- Storage Mirroring Ports 28
- Inserting a Server 30
- Storage Mirroring Workspaces 31
- 3 X Text Clients 32
- The Command Line Client 33
- Stopping the Daemon 35
- Exiting the Text Clients 40
- Failover Control Center 41
- “Failed Over” 44
- 5 X Replication Sets 46
- Multi-Client Access 47
- Replication Set Operations 48
- How Replication Sets Work 48
- Creating a replication set 49
- Modifying a replication set 53
- Deleting a replication set 53
- 6 X Connections 62
- Connection Options 63
- Throughput Diagnostic Utility 64
- Connection IDs 64
- Establishing a new connection 67
- Disconnecting a connection 68
- Monitoring a connection 69
- Connection display 70
- Configuring queuing 71
- Configuring auto-reconnect 72
- 7 X Mirroring 79
- Orphan Files 81
- Auto-Remirror 82
- How Mirroring Works 83
- Controlling a mirror manually 85
- Monitoring a mirror 86
- Configuring orphan files 87
- Setting auto-remirror 88
- Mirror Pause 92
- Mirror Resume 92
- 8 X Replication 97
- Processing task commands 100
- Replication Start 103
- Replication Stop 103
- Monitoring replication 104
- 9 X Verification 108
- Verification Log 110
- How Verification Works 111
- Verification log 114
- Monitoring verification 115
- Initiating verification 116
- 10 X Data Transmission 120
- Setting bandwidth limitations 123
- Setting a transmission window 126
- 11 X Failover 135
- Failover Terminology 136
- How Failover Works 136
- How Failback Works 137
- How Failure Detection Works 138
- Client Connectivity 138
- Failover Options on 139
- Failover Options 141
- Monitoring failover 145
- Initiating failback 146
- Communication ports 148
- Testing failover 149
- Failover manual intervention 149
- 12 X Restoration 159
- Conditionals 160
- Restoration Options 161
- Automating Restore 167
- 13 X Monitoring Tools 169
- Management Console Statistics 170
- Customizing the statistics 172
- At-a-Glance Monitoring 173
- The target is not loaded 175
- The target is busy 175
- Text Client main window 179
- DTCL status command 180
- Linux System Log 181
- DTStat log file 191
- Running DTStat 194
- DTStat statistics 196
- LogViewer 200
- LogViewer log file 201
- Viewing the log files 203
- LogViewer Messages 204
- Advanced Settings 208
- Setup options 210
- Network options 211
- Queue options 212
- Source options 213
- Target options 214
- Database options 215
- Logging options 216
- 15 X Security 235
- Click OK 236
- Conventions 237
- Storage Mirroring Commands 237
- Connect 238
- Connect TDU 239
- Disconnect 239
- Environment 241
- Failback 241
- Failover 242
- Get Local 242
- GetEnvStr 243
- Limit Bandwidth 243
- Load Source 244
- Load Target 244
- Mirror Pause 246
- Mirror Resume 246
- Mirror Start 247
- Mirror Stop 247
- Monitor Clear 248
- Monitor Create 248
- Monitor Delete 248
- Monitor Display 249
- Monitor Get 249
- Monitor List 249
- Monitor Move 250
- Monitor Option 251
- Monitor Remove 252
- Monitor Script Add 252
- Monitor Script Remove 253
- Monitor Start 253
- Monitor Stop 254
- Monitor Use 254
- Orphans Start 255
- Orphans Stop 255
- Pause Target 255
- Queue Task 256
- Replication Start 258
- Replication Stop 258
- Repset Calculate 258
- Repset Create 259
- Repset Delete 259
- Repset Display 259
- Repset List 260
- Repset Resync 260
- Repset Rule Add 260
- Repset Rule Remove 261
- Repset Save 261
- Repset Use 261
- Resume Target 263
- Schedule Clear 263
- Schedule Disable 263
- Schedule Enable 264
- Schedule End 264
- Schedule Start 265
- Schedule Window 265
- Set Local 266
- Shutdown 267
- Statslog Start 267
- Statslog Status 268
- Statslog Stop 268
- Transmission Pause 270
- Transmission Resume 270
- Transmission Start 270
- Transmission Stop 270
- Unload Source 271
- Unload Target 271
- Wait on Mirror 273
- Wait on Restore 273
- Wait on Target 273
- WRITE $<variable_name> 274
- DTCL Scripting 275
- DTCL Return Values 276
- DTCL Scripting Examples 279
- Basic flow control script 280
- B X Glossary 281
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