HP 3PAR Operating System Software - Manual (Page 5)

15 Setting Volume Group Policies...............................................................89
Automatically Restarting Volume Groups...............................................................................89
Generating Alerts for Slow Resynchronizations of Asynchronous Periodic Volume Groups.............90
16 Performing Manual Operations.............................................................91
Changing the Remote Copy Mode for a Volume Group..........................................................91
Manually Resynchronizing Volume Groups............................................................................92
Changing Secondary Volume Groups to Primary...................................................................93
Changing One Volume Group........................................................................................93
Changing All Volume Groups on a System.......................................................................93
Stopping and Starting Remote Copy.....................................................................................94
Removing Remote Copy Completely.....................................................................................94
17 Modifying Virtual Volumes....................................................................95
Converting Standard Virtual Volumes....................................................................................95
Growing Virtual Volumes....................................................................................................95
Renaming Virtual Volumes...................................................................................................96
18 Limiting Throughput.............................................................................97
Limiting Throughput for Asynchronous Periodic Volume Groups.................................................97
Removing Throughput Limits.................................................................................................98
19 Optimizing Performance......................................................................99
Optimizing RCIP Throughput by Increasing MTU Size.............................................................99
Avoiding RCIP Throughput Issues during Initial Synchronization................................................99
Optimizing Synchronization Speed over Distances................................................................100
Troubleshooting RCIP Autonegotiation Issues........................................................................100
Considering Additional Impacts on Performance..................................................................100
Volume Group Mode...................................................................................................100
Distribution of Host Writes over RCIP GigE Links..............................................................101
IV Recovering from Disaster........................................................................102
20 Disaster Recovery for 1-to-1 Configurations...........................................103
System Information during Normal Operation......................................................................104
Primary System (System1).............................................................................................104
Backup System (System2).............................................................................................105
System Information during Failover.....................................................................................106
Synchronous Mode......................................................................................................106
Asynchronous Periodic Mode........................................................................................106
Example Output after Primary System Failure..................................................................106
Recovering from Disaster...................................................................................................107
Failover.....................................................................................................................107
Recovery....................................................................................................................108
21 Disaster Recovery for N-to-1 Configurations..........................................113
System Information during Normal Operation......................................................................114
Backup System (System1)..............................................................................................114
First Primary System (System2).......................................................................................115
Second Primary System (System3)..................................................................................115
System Information during Failover.....................................................................................116
Synchronous Mode......................................................................................................116
Asynchronous Periodic Mode........................................................................................116
Example Output after Primary System Failure..................................................................116
Recovering from Disaster...................................................................................................117
Failover.....................................................................................................................117
Recovery....................................................................................................................118
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