A company adopts a two-site three-center disaster recovery solution, using a "synchronous + asynchronous parallel" networking method. When a disaster occurs in the production center, it can no…

A company adopts a two-site three-center disaster recovery solution, using a "synchronous + asynchronous parallel" networking method. When a disaster occurs in the production center, it can no longer provide services. If a backup host is deployed in the disaster recovery center in the same city, the backup host can access the slave LUN and take over the business.