Method used to plan reliability of the RAID group

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You can plan the RAID group as follows:
After a RAID group is created in the storage system, data is stored in the member disks of the RAID group. The mirroring and parity check functions of a RAID group provide reliable data recovery mechanisms if the member disks in a RAID group fail.

Other related questions:
Method used to plan performance of the RAID group
You can plan the RAID group performance as follows: Different RAID levels of vary in the following items: 1. Read and write performance. 2. Disk utilization. 3. Application scenarios. When selecting a RAID level for specific applications, consider performance, data amount to be stored, and disk utilization. The following conclusions can help in selecting RAID levels: a. If you do not consider the redundant data, RAID 0 has the best read and write performance. b. If you require data redundancy and good system performance regardless of disk costs, RAID 1 or RAID 10 can be optimal choices. c. If you require redundant data, good system performance, and cost-effective disks, RAID 3, RAID 5, RAID 6, and RAID 50 can be optimal choices.

Method used to create RAID groups on the existing disks
You can create RAID groups on the existing disks as follows: 1. During RAID capacity planning, you must plan the RAID group level. When determining the RAID level, the following must be considered: reliability, performance, and disk utilization. 2. You must also plan the number of member disks in the RAID group. That is, you must meet requirements on the number of member disks at different RAID levels.

Method used to guarantee data reliability of Kafka
After a Kafka Broker receives a message, it persistently stores the message on a disk. In addition, each partition of a topic has multiple replicas stored on different Broker nodes. If one node is faulty, the replicas on other nodes can be used.

RAID group
The definition of a RAID group is as follows: A single physical disk cannot meet requirements of a large amount of data storage and data security. A RAID group serves as a large logical disk that comprises independent physical disks of the different RAID levels, providing larger storage space. Different RAID levels meet data security requirements in different application scenarios.

Method used to ensure high data reliability on OceanStor 9000
The unique InfoProtector function of OceanStor 9000 ensures high data reliability. OceanStor 9000 ensures that data remains accessible when physical devices are faulty, and automatically recovers data on faulty physical devices. Data protection levels can be flexibly configured by setting different redundant ratios to obtain optimal data reliability and storage space utilization.

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