Creating the base service groups for DR configuration
You need to create the base service groups in Cluster Server and link those base service groups and resource types for DR configuration.
You need to create at least the following service groups with their respective resources on the cluster that contains Node1 and Node2 on site A:
| Service group | Resource |
|---|---|
| SFM_SStore | - SFM_SStore_DG |
| - SFM_SStore_IP | |
| - SFM_SStore_NIC | |
| - SFM_SStore_RVG | |
| SFM_Services | - SFM_Services_IP |
| - SFM_Services_NIC | |
| - SFM_Services_Mount | |
| - SFM_Services_RVGPrimary |
Note: For DR configuration, you need to use the service group names and resource names as suggested above. Failure to do so may result in configuration failure.
It is recommended to set up the VVR rlinks under Cluster Server control. No naming convention is required for the VVR rlink resources. For more information, refer to the Cluster Server Bundled Agents Reference Guide and Cluster Server Agents for Veritas Volume Replicator Configuration Guide depending on the version of the Cluster Server.
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For the resources that you need to create on the SFM_SStore service group, refer to the following table:
Resource name Resource type Attributes SFM_SStore_DG Disk group Diskgroup : Disk group that is specified for the failover. Note: You must create a clustered disk group. SFM_SStore_RVG RVG RVG : Replicated volume group (RVG) that is configured for replication of volumes Diskgroup : Disk group that is used for creating RVG. SFM_SStore_IP IP Address : Virtual IP address, which you have configured as a Replication IP. Device : Name of the NIC where virtual IP is plumbed. NetMask : Subnet mask that is associated with the virtual IP address. SFM_SStore_NIC NIC Device : Name of the NIC where Replication virtual IP is plumbed -
For DR configuration, you need to create the resources that are created for HA configuration as well as some additional resources.
For the resources that you need to create apart from the resources already created, refer to the following table:
| Resource name | Resource type | Attributes |
|---|---|---|
| SFM_Services_RVGPrimary | RVG Primary | Contains the RVG resource name that is to be used for replication. |
For more information on configuring resources, refer to the Veritas Cluster Server Bundled Agents Reference Guide.
After creating the required service groups and resources, you need to link the base service groups. For selecting the options while linking the service groups, refer to the following table:
| Selection | Option |
|---|---|
| SFM_Services | Parent Group |
| SFM_SStore | Child Group |
| Relationship | Online Local |
| Dependency Type | Hard |
You need to link the resources. For selecting parent and child dependencies, refer to the following table:
| Parent Dependency | Child Dependency |
|---|---|
| SFM_Services_IP | SFM_Services_NIC |
| SFM_Services_Mount | SFM_Services_RVGPRI |
| SFM_Services_RVGPRI | SFM_Services_IP |
| SFM_SStore_RVG | SFM_SStore_DG |
| SFM_SStore_RVG | SFM_SStore_IP |
| SFM_SStore_IP | SFM_SStore_NIC |
After creating the above-mentioned service groups on Site A and linking them, repeat the same procedure for site B that contains Node3 and Node4. In case of HADR configuration using asymmetrical nodes, the procedure needs to be repeated only for Node3 in site B.
On Site B, ensure that the SFM_Services_NIC, SFM_SStore_DG, SFM_SStore_RVG are online and rest of the resources are offline. Also, you must configure SFM_Services service group as Global on site A and add Site B in the cluster
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