How does the data storage work in the Cacti system?

Cacti system primarily stores data using the RRDTool (Round-Robin Database Tool) database. RRDTool is a tool designed for storing time series data, utilizing round-robin files to store the data. These round-robin files are special database files that allocate a specific storage space in advance and update the data at regular intervals. This approach ensures that the size of the database remains fixed and does not grow over time, avoiding performance issues caused by excessively large databases. Additionally, RRDTool offers functions such as automatic data summarization and data compression to help users effectively manage and analyze monitoring data. Cacti system employs the RRDTool database for storing monitoring data, allowing users to view and analyze this data through Cacti’s graphical interface.