After a remote replication is established between two sets of OceanStor 9000 devices, which of the following conditions cannot execute "Cancel the write protection of the remote replication slave directory"? (Multiple Choice)

A company purchased a set of Huawei storage equipment (such as Huawei OceanStori hybrid flash memory), which uses hard drives with SAS interfaces. In addition to SAS hard drives, what types of hard drives can the storage support? (Multiple Choice)

Which statement about distributed storage is wrong?

An enterprise plans to build three centers in two places on the cloud on HUAWEI CLOUD. The customer requires cross-regional disaster recovery to avoid business interruption. Due to the particularity of the business, the customer requires disaster recovery RPO=0. The technicians provided the customer with SDRS (Storage Disaster Recovery Service) + CBR (Cloud Backup and Recovery) solution of three centers on the cloud, two locations and three centers.
The production center X and disaster recovery center Y were built in Availability Zones 1 and 2 of region A, and the construction of region B. The remote disaster recovery center Z, X, and Z data centers can meet the customer's RPO=O disaster recovery requirements. 1. When all BBUs of the storage controller are damaged, the controller will automatically set the I/O write policy to write-through and lock to ensure data reliability. It cannot be forced to write-back before the fault is recovered.

The company plans to migrate business systems to HUAWEI CLOUD, and has purchased several cloud servers in Availability Zone 1 and Availability Zone 2 of Region A. Availability Zone 1 is used for production sites and Availability Zone 2 is used for disaster recovery sites. Requirements The RPO of disaster recovery is 0, and the RTO is less than 30 minutes. The enterprise has purchased the Storage Disaster Recovery Service. Which of the following description of the enterprise's cloud disaster recovery construction is wrong?