18 Apr 2023 01:23 AM - last edited on 20 Apr 2023 04:10 AM by Ana_Kuzmenchuk
I was wondering, what are the typical backup ratios for you?
My calculations are based on the reference here: https://www.dynatrace.com/support/help/shortlink/managed-cluster-backup-estimate
Cassandra: (SUM of all Nodes Metric Storage * 0.2) * 2
Elasticsearch: SUM of all Elasticsearch storage
calculation based on the first node:
Cassandra: (Count of Nodes * Metric Storage * 0.2) * 2
Elasticsearch: Count of Nodes* Elasticsearch storage
Is it like 20% Cassandra : 80% Elasticsearch? Or what more like 40% : 60%? Im our case we try to get a feeling for backups and how it will look like in the future with a fast growing environment, at the same time we want the bare minimum to be in the back up to safe storage which in our case is a cost factor ;).
Thanks to all in advance
Solved! Go to Solution.
Hi @MarcoCritti ,
as the size might vary slightly between nodes. You can calculate it based on the node with the most consumed storage.
example. Cassandra: (Count of Nodes * Metric Storage of the node with the most consumed storage * 0.2) * 2
Note that this estimate won't be accurate if it was calculated on a new cluster that just started storing data. As the storage on disk grows, so will the size of the backup.