Take Huawei Ocean Stor flash storage products as an example. Which of the following descriptions of indicator lights are correct? (Multiple Choice)

In RAID 2.0+, the administrator needs to manually set and specify which hard disks are used as hot spare disks.

Which version is used to check RHEL 5 operating system?

Storage architecture is developing from distributed to centralized.

In the storage planning and deployment stage, an enterprise has learned that the company's business requires high read and write performance, data redundancy and data recovery capabilities, and hopes to ensure that data can be recovered by one person in the event of a single failure. At the same time, it is required that the utilization rate of the hard disks in the RAID group composed of 6 hard disks is not less than 60%. According to the above requirements, which RAID levels can be selected? (Multiple Choice)