Hitachi TrueCopy Properties

Data Replication Property: Cluster_dgs (string array)

Lists the 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.  

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 the nodes in the cluster 

Device Group Property: Fence_level (enum)

Defines the fence level that is used by the device group. The fence level determines the level of consistency among the primary and secondary volumes for that device group. Possible values are Never and Async. To use the data or status fence levels, contact your Sun representative.

For more information about setting this property, see How to Add a Data Replication Device Group to a Hitachi TrueCopy Protection Group

Tuning recommendations: This property can only be tuned when the protection group is offline. 

Category: Required 

Default: None