After the failure, the customer's application data needs to be collected.

Which of the following scenarios will trigger Huawei OceanStor hybrid flash storage to perform hard disk recovery and reconstruction? (Multiple Choice)

In which of the following scenarios will OceanStor 9000 not trigger data balance?

The Huawei OceanStor hybrid flash storage system used in a customer's business application has a total of three POOLs, all of which are 8D+1P RAID5. A business interruption occurred on a certain day, and engineers found some scenarios that caused the failure in the system by analyzing the logs. Which of the following scenarios will cause the service interruption of host access to storage? (Multiple Choice)

Customer A purchased Huawei Data Protection Appliances (DPAs) and used an advanced backup solution to back up the data of the database system, file system and operating system.
Customers need to install and restore data within minutes. In this case, the backup copy can be installed on the production system in real-time, enabling service restoration within minutes.