The panorama of Huawei's disaster recovery solutions includes local, intra-city, and remote storage.

Local high availability can use real-time mirroring and synchronous replication solutions. Due to the close bandwidth and distance, it usually requires RPO=0.

the remote disaster recovery party can choose the remote active-active and remote active-standby solutions according to different needs

For intra-city disaster recovery, you can choose intra-city active-active and intra-city active/standby solutions according to different needs.

Local high availability deploys services in the same computer room in close proximity.