Abstract:

21 centimeter array （21CMA） is China’s pilot equipment in the square kilometre array （SKA） low-frequency band， therefore， the National SKA Program of China launches a special upgrade plan for 21CMA to enable pulsar observation capability. To solve the problem of receiving and storing massive observation data after upgrading， the project designed and introduced a distributed file storage system based on advanced RISC machine （ARM）， but there are still shortcomings in terms of usability and standardization. This study customizes deployment， failure recovery， and system monitoring interface module for 21CMA storage device， and carries out system tests. The test covers the deployment time， failure recovery time， and database stability of the monitoring system. The test results show that the system solves the operation and maintenance management problems of 21CMA storage devices， also improves their reliability and efficiency， meets the needs of 21CMA’s multi-cluster monitoring， and is of great significance for similar projects in the future.

Key words: operations and maintenance management, monitoring and visualization, distributed storage system, 21CMA