Best Practices When Using TrueCopy for Storage-Based Data Replication

When setting up device groups that use the Hitachi TrueCopy software for storage-based data replication, observer the following practices:

• Always use the highest fence level, data, to avoid failover to an old copy of the data.

• Create one Hitachi TrueCopy device group per resource group. A one-to-one relationship should exist between the cluster resource group, the cluster device group, the VxVM disk group, and the Hitachi TrueCopy device group.

• Global file-system volumes and failover file-system volumes cannot be mixed in the same Hitachi TrueCopy device group.

• All RAID manager instances should be up and running at all times.