What type of replication is used in a Warm Vault?

In a Warm Vault setup, one-way replication to a standby server is utilized. This means that data is replicated from the primary vault to a secondary or standby vault, but not the other way around. This method ensures that the standby vault can act as a reliable backup in the event of a primary vault failure but does not allow direct updates or changes from the standby back to the primary.

This approach is advantageous because it simplifies the management of data consistency and integrity, as the primary server remains the authoritative source for data. Since updates only occur on the primary server, the risk of divergent data states between servers is minimized. In the event of a failover, the standby server already holds the latest replicated data from the primary, ensuring continuity of service without the complexity of bidirectional data changes.

By contrast, the other options do not align with the specific purpose and function of a Warm Vault. Two-way replication introduces complexities that are not typical for such setups, and read access with no backup capabilities would fail to provide the necessary redundancy. Full synchronization across all servers does not reflect the one-way nature of the replication model designed for a Warm Vault environment.