A multinational enterprise has a huge business, and customer business data is scattered in multiple locations, and the distance between the locations is greater than 1000km. The enterprise hopes to centrally manage the backup data of each site, so that users can analyze and mine all data without affecting the normal business. If any business site suffers a disaster, the enterprise can take over the business and perform data recovery. In this case, which disaster recovery backup solution should the enterprise choose?

A manufacturer's distributed storage system was put into operation for 100 days, running 24 hours a day. A failure occurs on the morning of the 10th day. Recovery took 1 hour. A failure occurred on the morning of the 25th day, and the failure recovery took 4 hours. A failure occurred in the morning of the 80th day, and the failure recovery took 1 hour. The availability of the software system is?

The SmartPatition of Huawei's OceaStor hybrid flash storage can allocate independent cache space for different LUNs, and the capacity of the cache space is shared by read and write operations.

Both the production center and the disaster recovery center of a bank use Huawei's hyper-converged storage products, and the two centers perform disaster recovery through asynchronous replication. The replicated network type can support GE/10GE/25GE.

Establish a remote disaster recovery center, the distance is 1000KM, the business data increment is 2G per day, the synchronization is up to 8 hours, the bandwidth utilization rate is 70%, and what is the minimum bandwidth that meets the demand?