The asynchronous remote replication of Huawei OceanStor storage system adopts multi-time slice caching technology, which can make the RPO index of LUN asynchronous remote replication reach the second level.

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.

A server installed with SUSE Enterprise Server 12 is equipped with SSD hard disks. What kind of I/O scheduling algorithm should we configure? (Multiple Choice)

Compared with traditional RAID, what are the characteristics of RAID 2.0+ technology? (Multiple Choice)

The storage layer of Huawei DPA adopts adaptive C/S technology, and automatically collects C/S fault analysis according to F2, also known as G2 diagnosis, the process of collecting and analyzing data in order to confirm the cause of G2 and prevent recurrence.