Which of the following statements about asynchronous remote replication of the Huawei Active-Passive DR Solution is correct?

The data format before and after the backup is the same, and the backup data can be directly used to restore production data to ensure the continuity of business read and write.

When maintaining the N8500 clustered NAS, if you cannot log in to the N8500 clustered NAS system with the master account. The possible reasons are?

A company purchased multiple sets of Huawei distributed storage, deployed them in multiple data centers, and used object service remote replication to build a disaster recovery system. These distributed storages were planned in the same area, so this area has one and only one default cluster, other clusters are non-default clusters.

企業には、データベースアプリケーション、OLTPアプリケーション、メールサービスアプリケーション、Webサーバーアプリケーションなどのさまざまなサービスがあります。SmartCache機能は、次の______ビジネスシナリオのパフォーマンスを大幅に向上させることはありません。