Advantages
Active-Active Storage
Benefiting from the solid reliability of the active-active feature, the failure of a single storage device does not lead to a business interruption or data loss (RPO=0). During the replication, the computing performance of ECSs will be not adversely affected.
DR Management
Key management nodes, such as ManageOne IAM, BCManager eReplication, and FusionSphere OpenStack, can be deployed across sites, and be connected to the third site for arbitration. An automatic failover will be triggered when one site fails or a link failure occurs. Non-key management nodes support cross-site DR and manual failover.
Data Consistency
CSHA allows you to enable consistent active-active protection for all EVS disks in one or one group of ECSs.
Application Unawareness
Based on IaaS, CSHA supports cross-site active-active at the storage layer. Once a site fails, business will be taken over and restored before the users feel it.
Automatic and Manual Failover
The automatic failover and manual failover are both supported:
- Automatic failover: ECSs will automatically fail over between sites when one site fails. As the site is recovered, reprotection will automatically start.
- Manual failover: When a site is partially faulty, it takes the administrator's one click to restore the affected CSHA service instances at the site.
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