In the ransomware protection backup (NAS) scenario, if service data at the production end is lost or damaged, you can use the copies created during protection to back up and restore the data.
Backup and restoration is based on the copy granularity. Some snapshots in a copy cannot be backed up and restored.
When the storage resources or protected objects changed in the current time and snapshot copied time. For details about copy restoration scenarios and handling measures, see Copy-based Recovery and Risk Handling Measures.
The Air Gap anti-ransomware protection takes over only the secondary replication end. During the backup and recovery, the recovered data is synchronized to the primary replication end. You may need to manually process the primary replication end to ensure successful backup and restoration. For example, in the ransomware protection (NAS) scenario, no read or write operation is performed on the primary NAS file system during backup and restoration.
After the data rollback starts, you can view the execution process and result. If the task is failed, you can solve the problem and execute the task again.