hey Dmytro! as far as backing up your data and restoring it goes, we basically recommend taking a sql dump of your data and then when you restore this data, run the restore indices job in order to populate your graph and search indices. In order to populate timeseries aspects you'll need to a backup of Elasticsearch or re-ingest your timeseries aspects. here's a quick explanation with a little more detail in our docs:
https://datahubproject.io/docs/how/backup-datahub/