The two-site three-center disaster recovery solution adopts "synchronous + asynchronous cascading" networking: deploy disk array A in the production center, deploy disk array B in the disaster…

The two-site three-center disaster recovery solution adopts "synchronous + asynchronous cascading" networking: deploy disk array A in the production center, deploy disk array B in the disaster recovery center in the same city, and interconnect the two data centers through FC links. 2'Disk array A in the production center establishes synchronous remote with disk array B in the disaster recovery center in the same city and synchronizes the data of disk array A to disk array B in real time. In the off-site disaster recovery center, deploy disk arrays, establish asynchronous remote with disk array B in the disaster recovery center in the same city, and periodically synchronize the data of disk arrays to the array