Geographic Edition Properties for Hitachi TrueCopy and Universal Replicator

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This appendix provides the properties of Geographic Edition data replication components.

This appendix contains the following sections:

Hitachi TrueCopy and Universal Replicator Properties
Hitachi TrueCopy and Universal Replicator Properties That Must Not Be Changed

Note - The property values, such as True and False, are not case sensitive.

Hitachi TrueCopy and Universal Replicator Properties

The following table describes the Hitachi TrueCopy and Universal Replicator properties that the Geographic Edition framework defines.

Table 13 Hitachi TrueCopy and Universal Replicator Properties

Property	Description
Data Replication Property: `Cluster_dgs` (string array)	Lists the Oracle Solaris Cluster device groups where the data is written. The list is comma delimited. Only applications that belong to the protection group should write to these device groups. The Oracle Solaris Cluster device groups listed in the `Cluster_dgs` protection group property must exist and have the same name on both the primary cluster and the secondary cluster. The LUNs in this device group must correspond to LUNs getting replicated in the Hitachi data replication component added to the protection group. Specify this property if you want geographic edition to unmount file systems that use this Oracle Solaris Cluster device group. Tuning recommendations: This property can only be tuned when the protection group is offline. Category: Optional Default: Empty
Data Replication Property: `Nodelist` (string array)	Lists the host names of the machines that can be primary for the replication mechanism. This list is comma delimited. Tuning recommendations: This property can be tuned at any time. Category: Optional Default: All nodes in the cluster
Data Replication Property: `Fence_level` (enum)	Defines the fence level that is used by the data replication component. The fence level determines the level of consistency among the primary and secondary volumes for that data replication component. Possible values are `Never` and `Async`. To use the `data` or `status` fence levels, contact your Oracle representative. Note - If you specify a `Fence_level` of `never`, the data replication roles do not change after you perform a takeover. For more information about setting this property, see How to Create a Protection Group for Oracle Real Application Clusters. Tuning recommendations: This property can only be tuned when the protection group is offline. Category: Required Default: None
Data Replication Property: `Ctgid` (integer)	Specifies the consistency group ID (CTGID) of the protection group. Once the CTGID of a protection group has been set, all Hitachi TrueCopy or Universal Replicator data replication components thereafter added to the protection group either must be uninitialized or must already have the same CTGID as the protection group. Attempting to add an initialized data replication component to a protection group results in an error if the CTGID of the data replication component differs from the CTGID of the protection group. A data replication component with the same CTGID as a protection group must be added to that protection group. Tuning recommendations: This property can only be tuned at creation. Category: Optional Default: None