The active-active distributed storage block service supports incremental synchronization. When a site fails, the site that wins the arbitration will provide services according to the system's…

The active-active distributed storage block service supports incremental synchronization. When a site fails, the site that wins the arbitration will provide services according to the system's arbitration mechanism. The TO request is converted from dual write to single write. When the system at the failed site is restored, it supports synchronizing the data that has changed during the failure to the restored site to quickly restore the system.