What is the data retention period ? Is there a way to admin the purge ?

When received, data is aggregated to minimize storage without deleting history. Available granularities are 5 minutes, hour and day. By default, data retention is 3 week for 5 minutes granularity, 3 months for 1 hour granularity, and day. Data are never purged. Specific KPI such as daily 5 minutes max period can however be stored for longer period for capacity planning needs.