To ensure data integrity, use multipathing and the proper RAID package. The following list includes considerations for implementing a campus cluster configuration that uses storage-based data replication.
Node-to-node distance is limited by the Sun Cluster Fibre Channel and interconnect infrastructure. Contact your Sun service provider for more information about current limitations and supported technologies.
Do not configure a replicated volume as a quorum device. Locate any quorum devices on an unreplicated volume.
Ensure that only the primary copy of the data is visible to cluster nodes. Otherwise, the volume manager might try to access both primary and secondary copies of the data, which could result in data corruption because the secondary copy is read-only.
When you create a disk group or diskset that is using replicated devices, use the same name for the disk group or diskset and the Hitachi TrueCopy replica pair.
Refer to the documentation that was shipped with your storage array for information about controlling the visibility of your data copies.
Particular application-specific data might not be suitable for asynchronous data replication. Use your understanding of your application's behavior to determine how best to replicate application-specific data across the storage devices.
If configuring the cluster for automatic failover, use synchronous replication.
For instructions on configuring the cluster for automatic failover of replicated volumes, see Administering Storage-Based Replicated Devices.