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Synchronous mode for 1-to-1 configurations – HP 3PAR Operating System Software User Manual

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Name Target Status Role Mode Options

sync_group_1.r96 System1 Started Secondary Sync

LocalVV ID RemoteVV ID SyncStatus LastSyncTime

remotevv.0 375 localvv.0 413 Syncing NA

remotevv.1 376 localvv.1 414 Syncing NA

Name Target Status Role Mode Options

sync_group_2 System1 Started Primary Sync

LocalVV ID RemoteVV ID SyncStatus LastSyncTime

localvv.0 385 remotevv.0 423 Syncing (20%) NA

localvv.1 386 remotevv.1 424 Syncing (20%) NA

System Information during Failover for 1-to-1 Configurations

Synchronous Mode for 1-to-1 Configurations

When a failure occurs on systems with synchronous mode volume groups such that all links between
the systems are broken, the following actions occur:

After 10 seconds, the system marks the sending links as Down.

After another 10 seconds, the system marks the targets as failed.

Asynchronous Periodic Mode for 1-to-1 Configurations

When a failure occurs on systems with asynchronous periodic mode volume groups such that all
links between the systems are broken, the following actions occur:

After 60 seconds, the system marks the sending links as Down.

After another 200 seconds, the system marks the targets as failed.

Example Output after Primary System Failure for 1-to-1 Configurations

If a primary system containing synchronous mode volume groups (System1) becomes unavailable,
60 seconds later the showrcopy output on the backup system (System2) looks like the following:

# showrcopy

Remote Copy System Information

Status: Started, Normal

Target Information

Name ID Type Status Options Policy

System1 2 IP failed mirror_config

Link Information

Target Node Address Status Options

System1 0 10.100.33.96 Down

System1 1 10.101.33.96 Down

receive 0 10.100.33.96 Up

receive 1 10.101.33.96 Up

Group Information

Name Target Status Role Mode Options

sync_group_1.r96 System1 Stopped Secondary Sync

LocalVV ID RemoteVV ID SyncStatus LastSyncTime

remotevv.0 375 localvv.0 413 Stopped Thu Dec 14 17:50:53 PST 2006

remotevv.1 376 localvv.1 414 Stopped Thu Dec 14 17:50:52 PST 2006

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Disaster Recovery for 1-to-1 Configurations