Understanding and Designing Serviceguard Disaster Recovery Architectures

N-1 configuration..........................................................................................................31
N-1 Bidirectional configuration........................................................................................32
Continentalclusters With Cascading Failover.....................................................................32
Cascading Failover Using Metrocluster........................................................................33
Features of Continentalclusters ............................................................................................34
Cluster Event Notifications..............................................................................................34
Push-button Recovery.....................................................................................................34
Highly available monitoring............................................................................................34
Integration with array based replication...........................................................................35
Integration with software based replication.......................................................................35
Continentalclusters Maintenance mode............................................................................35
Disaster Recovery Rehearsal...........................................................................................35
Site Controller support...................................................................................................36
Data Replication Storage Failover Preview........................................................................36
General Requirements....................................................................................................36
Benefits of Continentalclusters..............................................................................................36
Understanding Site Aware Disaster Tolerant Architecture Concepts................................................37
Terms and Concepts...........................................................................................................38
Sites............................................................................................................................38
Complex Workload.......................................................................................................38
Critical and managed packages................................................................................38
Root package in a complex workload.........................................................................38
Site Controller Package..................................................................................................39
Site Safety Latch............................................................................................................39
Types of Configuration........................................................................................................39
Metrocluster SADTA configuration....................................................................................39
Continentalclusters SADTA configuration...........................................................................40
Features of SADTA ............................................................................................................41
Simplified Disaster Recovery for complex workloads..........................................................41
Site Preferred failover policy...........................................................................................41
Support for Oracle RAC and CFS....................................................................................41
Support for all Metrocluster products................................................................................42
Understanding Three Data Center Disaster Recovery Solution.......................................................42
Understanding Virtualized Environments configured in Metrocluster or Continentalclusters.................42
Types of Configuration........................................................................................................43
Virtualized Environments as a Serviceguard Package in a Metrocluster or Continentalclusters.......43
Virtualized Environments as a Serviceguard Node in a Metrocluster or Continentalclusters...........45
Virtual Partitions/Integrity VM on Separate Hosts...............................................................46
Multiple Virtual Partitions/Integrity VM/VMWare virtual machines on a single Host...............46
Combination of Physical Hosts and Virtual Environments.....................................................47
3 Extended Distance Cluster Configurations....................................................49
Benefits of Extended Distance Cluster........................................................................................49
Extended Distance Cluster on Linux...........................................................................................50
Extended Distance Cluster on HP-UX.........................................................................................50
Extended Distance Cluster for Oracle RAC ...........................................................................50
Benefits of Extended Distance Cluster for RAC........................................................................54
Support for Cross-Subnet Configurations in Extended Clusters..................................................55
Configuration Requirements for all Extended Distance Clusters.................................................55
Special Requirements and Recommendations for using LVM and SLVM in Extended Clusters.........57
Special Requirements and Recommendations for using VxVM, CVM and CFS in Extended
Clusters............................................................................................................................58
Recommendations and Requirements for EC RAC Configurations with Oracle RAC 10g or 11g.....59
TCP/IP Network and Fibre Channel Data Links between the Data Centers.................................59
Separate Links for TCP/IP Networking and Fibre Channel Data................................................59
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