Hi gkmgaurav , this is a great question! Percona hasn’t published a case study on delivering High Availability with PMM. In general the recommended way to protect against data loss is to take a backup of the PMM data container with:
sudo docker save -o /backup/pmm-data-`date +%Y%m%d`.tar pmm-data
This will at least give you a restore point should disaster strike PMM Server.
We are actively considering other options with regards to High Availability, and as we solidify our path we will blog about it! Thanks for the question.