(Drag and drop) According to the Huawei backup solution design process, sort the following 4

During the processing of the I/O stack of Huawei's distributed big data service, the computing component sends the request to Node module through hdfs_client, and returns the file metadata information.

When configuring the protection level of the Huawei OceanStor 9000 directory, if the data protection level is set to 4+2. Then the corresponding metadata will generate 3 identical images.

A company has purchased a Huawei hybrid flash memory system as a decision support system and plans to make performance adjustments.
After testing, storage engineers can obtain the following information:
1) The size of each I/O ranges from 64KB to 1MB
2) The percentage of sequential read I/Os is 90%.
3) The average utilization rate of front-end bandwidth is 90%.
4) The host application is the database.
Based on the above information, which of the following performance adjustment measure are not appropriate for this situation?

Huawei's hybrid flash storage system supports the integration of high-end storage technologies such as dynamic tiered storage, quality of service management, cache partitioning, hard disk balance, heterogeneous storage virtualization, and multiple data protection.