A company plans to upgrade the disaster recovery system, which requires the overall disaster recovery capability to meet the international standard SHARE7 8 Tier 7. The IT department takes the input-output ratio into consideration when planning and designing. The active and standby disaster recovery plan is selected.

A company purchased two sets of Huawei all-flash storage devices, and configured their active- active quorum policy as quorum server mode. When the quorum server fails, which of the following options are incorrect? (Multiple Choice)

Which of the following statements about the reliability of Huawei's OceanStor Pacific series storage system architecture are correct? (Multiple Choice)

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 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.

Storage engineer A often receives feedback from users that the read and write speed of business applications running on the storage is slow, and there is a phenomenon of lag. Engineer A logs in to the storage to check and finds that there is no front-end service port alarm, and replies to the user that the storage performance is normal.