Deployment mode of OceanStor ReplicationDirector in the data center disaster recovery solution (active-active mode)

The disaster recovery data center solution (active-passive mode) applies to local and remote disaster recovery scenarios. The production center and disaster recovery center work in active-passive mode, meaning that if a disaster occurs at the production center, the disaster recovery center quickly takes over its services. 1. To ensure disaster recovery data consistency, the OceanStor ReplicationDirector Server is installed on the disaster recovery management server (or VM) in the disaster recovery center, and OceanStor ReplicationDirector Agent is installed on each host that requires disaster recovery. 2. To achieve remote disaster recovery, remote replication relationships are established between storage systems. In addition, this solution can use storage snapshots of protected objects to roll back data, preventing data loss and virus attacks. 3. The solution supports the following disaster recovery technologies: synchronous remote replication (array), asynchronous remote replication (array), asynchronous remote replication (VIS), mirroring (VIS)+asynchronous remote replication (array), and host-based replication.

OceanStor ReplicationDirector (current major version: V100R003C10) is deployed in the disaster recovery data center solution (active-passive mode) in the following manner: 1. You can deploy one piece of ReplicationDirector in either center to centrally manage the production and disaster recovery centers or deploy one piece of ReplicationDirector at each center to perform disaster recovery management. 2. When deploying only one piece of OceanStor ReplicationDirector, you are advised to deploy it at the disaster recovery center and ensure that the management server can communicate through the management network with service hosts and storage devices at the production center.

The disaster recovery data center solution (active-passive mode) supports the following applications: Mainstream databases: Oracle (RAC), Microsoft SQL Server (MSFC), and IBM DB2 (VCS and PowerHA) Mainstream application: Microsoft Exchange Server File system: NTFS and NAS

The solution uses the VIS mirror function to mirror host services from the production center to the remote disaster recovery center. This achieves disaster recovery protection at zero RPO and RTO. This solution also supports the tri-mirror function, enhancing data reliability and can use VIS snapshots of protected objects to roll back data, preventing data loss and virus attacks. 1. The solution uses the VIS mirror function to mirror host services from production center 1 to production center 2. Both data centers work concurrently to share service loads, improving disaster recovery service capability and system resource utilization. The data centers are mutually backed up. If one data center fails, the other takes over its services, ensuring business continuity. 2. In this solution, deploy one piece of OceanStor ReplicationDirector to manage disaster recovery services in the active-active data centers. You are advised to deploy OceanStor ReplicationDirector at the active-active disaster recovery center. The OceanStor ReplicationDirector Agent automatically detects the applications on hosts and the storage systems used by the applications. The OceanStor ReplicationDirector Server automatically identifies the configurations of the active-active disaster recovery solution and formulates disaster recovery protection policies. 3. This solution supports the active-active (VIS) technology.

The disaster recovery data center solution (active-active mode) supports the following applications: