HP Serviceguard Continentalcluster manual 3

Contents
Printing History...........................................................................................	17
Preface......................................................................................................	19
Guide to Disaster Recovery Solutions Documentation...................................................................	20
1 Designing a Metrocluster...........................................................................	23
Designing a Disaster Recovery Architecture for use with Metrocluster Products.................................	23
Single Data Center............................................................................................................	24
Two Data Centers and Third Location with Arbitrator(s)...........................................................	24
Site Aware Failover Configuration...................................................................................	26
Volume Monitor Configuration........................................................................................	28
Arbitrator Node Configuration Rules................................................................................	29
Disk Array Data Replication Configuration Rules................................................................	29
Calculating a Cluster Quorum.........................................................................................	29
Example Failover Scenarios with One Arbitrator................................................................	29
Example Failover Scenarios with Two Arbitrators...............................................................	30
Worksheets............................................................................................................................	31
Disaster Tolerant Checklist...................................................................................................	31
Cluster Configuration Worksheet..........................................................................................	32
Package Configuration Worksheet........................................................................................	32
Next Steps.............................................................................................................................	35
2 Designing Continentalclusters.....................................................................	36
Understanding Continentalclusters Concepts...............................................................................	36
Mutual Recovery Configuration............................................................................................	38
Application Recovery in Continentalclusters...........................................................................	39
Monitoring over a Network.................................................................................................	40
Cluster Events....................................................................................................................	40
Interpreting the Significance of Cluster Events........................................................................	41
How Notifications Work.....................................................................................................	41
Alerts...............................................................................................................................	41
Alarms.............................................................................................................................	42
Creating Notifications for Failure Events................................................................................	42
Creating Notifications for Events that Indicate a Return of Service.............................................	42
Maintenance Mode for Recovery Groups..............................................................................	42
Moving a Recovery Group into Maintenance Mode...........................................................	43
Moving a Recovery Group out of the Maintenance Mode...................................................	44
Performing Cluster Recovery................................................................................................	44
Performing Recovery Group Rehearsal in Continentalclusters....................................................	45
Notes on Packages in Continentalclusters..............................................................................	46
Startup and Switching Characteristics...............................................................................	46
Network Attributes........................................................................................................	47
How Serviceguard commands work in a Continentalclusters....................................................	47
Designing a Disaster Recovery Architecture for use with Continentalclusters....................................	48
Mutual Recovery................................................................................................................	48
Serviceguard Clusters.........................................................................................................	48
Data Replication................................................................................................................	49
Physical Data Replication ..............................................................................................	50
Using Modular Packages................................................................................................	50
Using Legacy Packages..................................................................................................	50
Multiple Recovery Pairs in Continentalclusters....................................................................	51
Highly Available Wide Area Networking..............................................................................	51
Data Center Processes .......................................................................................................	52

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